# Accessibility bug reports — data.cms.gov, week 2026-W40

31 issue type(s) from 2550 pages scanned. Generated 2026-09-30 by [vital-scans](https://github.com/mgifford/vital-core), following [accessibility bug-reporting best practices](https://mgifford.github.io/ACCESSIBILITY.md/examples/ACCESSIBILITY_BUG_REPORTING_BEST_PRACTICES.html).

> Automated checks find roughly a third of accessibility barriers. Fields marked "requires manual testing" cannot be observed by an automated scan and need a human with assistive technology.

---
## Target size is at least 24×24 CSS pixels or has spacing (Minimum) (WCAG 2.5.8)

**Bug ID:** `VS-3148a107`  
**Pattern ID:** `VS-179ad9b3`  
**URL:** https://data.cms.gov/resources/opt-out-affidavits-methodology  
**XPath / selector:** `<button class="selected" aria-label="card 1">`  
**WCAG SC:** 2.5.8 — Target Size (Minimum) (Level AA)  
**Rule:** Siteimprove Alfa — `sia-r113` ([reference](https://alfa.siteimprove.com/rules/sia-r113))  
**Severity:** Moderate  
**Frequency:** 31 instances; 11 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### Description
Target size is at least 24×24 CSS pixels or has spacing (Minimum). Detected by Siteimprove Alfa rule sia-r113 on 11 of 2550 scanned pages (31 instances).

### Steps to reproduce
1. Open https://data.cms.gov/resources/opt-out-affidavits-methodology.
2. Locate the element: <button class="selected" aria-label="card 1">
3. Confirm the Siteimprove Alfa finding for rule sia-r113 against WCAG 2.5.8 Target Size (Minimum).

### Impact
Affects Limited manipulation/strength (13.0%), Limited reach (2.0%), Limited vision (2.4%).
- **Limited manipulation/strength** (13.0% of population)
- **Limited reach** (2.0% of population)
- **Limited vision** (2.4% of population)

### Affected pages
- https://data.cms.gov/resources/opt-out-affidavits-methodology
- https://data.cms.gov/resources/acos-aco-participants-and-snf-affiliates-methodology
- https://data.cms.gov/provider-characteristics
- https://data.cms.gov/resources/medicare-monthly-enrollment-methodology
- https://data.cms.gov/resources/additional-information-on-revalidation
- https://data.cms.gov/tools/mapping-medicare-disparities-by-population
- https://data.cms.gov/resources/medicare-part-d-prescribers-methodology
- https://data.cms.gov/resources/medicare-outpatient-hospitals-methodology
- https://data.cms.gov/resources/medicare-part-b-spending-by-drug-methodology
- https://data.cms.gov/resources/medicaid-spending-by-drug-data-dictionary
- https://data.cms.gov/resources/aco-reach-model-methodology

### Testing environment
Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r113

### Example pages
- https://data.cms.gov/resources/opt-out-affidavits-methodology
- https://data.cms.gov/resources/acos-aco-participants-and-snf-affiliates-methodology
- https://data.cms.gov/provider-characteristics

---

## Accessible name of link or button matches visible label (WCAG 2.5.3)

**Bug ID:** `VS-2f8438cd`  
**Pattern ID:** `VS-f7dba940`  
**URL:** https://data.cms.gov/provider-data/birthing-friendly-hospitals-and-health-systems  
**XPath / selector:** `<a href="" tabindex="0" target="_blank" rel="noopener noreferrer">`  
**WCAG SC:** 2.5.3 — Label in Name (Level A)  
**Rule:** Siteimprove Alfa — `sia-r14` ([reference](https://alfa.siteimprove.com/rules/sia-r14))  
**Severity:** Moderate  
**Frequency:** 1 instances; 1 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (13 weeks)

### Description
Accessible name of link or button matches visible label. Detected by Siteimprove Alfa rule sia-r14 on 1 of 2550 scanned pages (1 instances).

### Steps to reproduce
1. Open https://data.cms.gov/provider-data/birthing-friendly-hospitals-and-health-systems.
2. Locate the element: <a href="" tabindex="0" target="_blank" rel="noopener noreferrer">
3. Confirm the Siteimprove Alfa finding for rule sia-r14 against WCAG 2.5.3 Label in Name.

### Impact
Affects Without vision (1.0%), Without speech (0.5%).
- **Without vision** (1.0% of population)
- **Without speech** (0.5% of population)

### Affected pages
- https://data.cms.gov/provider-data/birthing-friendly-hospitals-and-health-systems

### Testing environment
Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r14

---

## [role="img"] elements must have alternative text (WCAG 1.1.1)

**Bug ID:** `VS-d631bd29`  
**Pattern ID:** `VS-ede1e565`  
**URL:** https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-d-spending-by-drug  
**XPath / selector:** `canvas`  
**WCAG SC:** 1.1.1 — Non-text Content (Level A)  
**Rule:** axe-core — `role-img-alt` ([reference](https://dequeuniversity.com/rules/axe/4.12/role-img-alt?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 6 instances; 3 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### HTML snippet
```html
<canvas role="img" height="500" width="768" style="display: block; box-sizing: border-box; height: 500px; width: 768px;"></canvas>
```

### Description
[role="img"] elements must have alternative text. Detected by axe-core rule role-img-alt on 3 of 2550 scanned pages (6 instances).

### Steps to reproduce
1. Open https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-d-spending-by-drug.
2. Locate the element: canvas
3. Confirm the axe-core finding for rule role-img-alt against WCAG 1.1.1 Non-text Content.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-d-spending-by-drug
- https://data.cms.gov/beta/provider-characteristics/medicare-provider-supplier-enrollment/medicare-provider-and-supplier-taxonomy-crosswalk
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-b-spending-by-drug

### Testing environment
Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
**How to fix:** Elements with role="img" need an accessible name via aria-label or aria-labelledby.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/role-img-alt?application=axeAPI

### Example pages
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-d-spending-by-drug
- https://data.cms.gov/beta/provider-characteristics/medicare-provider-supplier-enrollment/medicare-provider-and-supplier-taxonomy-crosswalk
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-b-spending-by-drug

---

## Image has accessible name (WCAG 1.1.1)

**Bug ID:** `VS-207cb39a`  
**Pattern ID:** `VS-a24eaa8c`  
**URL:** https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-d-spending-by-drug  
**XPath / selector:** `<canvas role="img" height="500" width="768" style="display: block; box-sizing: border-box; height: 500px; width: 768px;">`  
**WCAG SC:** 1.1.1 — Non-text Content (Level A)  
**Rule:** Siteimprove Alfa — `sia-r2` ([reference](https://alfa.siteimprove.com/rules/sia-r2))  
**Severity:** Moderate  
**Frequency:** 5 instances; 2 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (16 weeks)

### Description
Image has accessible name. Detected by Siteimprove Alfa rule sia-r2 on 2 of 2550 scanned pages (5 instances).

### Steps to reproduce
1. Open https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-d-spending-by-drug.
2. Locate the element: <canvas role="img" height="500" width="768" style="display: block; box-sizing: border-box; height: 500px; width: 768px;">
3. Confirm the Siteimprove Alfa finding for rule sia-r2 against WCAG 1.1.1 Non-text Content.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-d-spending-by-drug
- https://data.cms.gov/beta/provider-characteristics/medicare-provider-supplier-enrollment/medicare-provider-and-supplier-taxonomy-crosswalk

### Testing environment
Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
**How to fix:** Give every <img> an accessible name (alt text), or alt="" if purely decorative.

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r2

### Example pages
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-d-spending-by-drug
- https://data.cms.gov/beta/provider-characteristics/medicare-provider-supplier-enrollment/medicare-provider-and-supplier-taxonomy-crosswalk

---

## <li> elements must be contained in a <ul> or <ol> (WCAG 1.3.1)

**Bug ID:** `VS-b4999ba9`  
**Pattern ID:** `VS-6175596b`  
**URL:** https://data.cms.gov/provider-data/topics/doctors-clinicians  
**XPath / selector:** `.dc-c-search-list-item.ds-u-padding-top--3:nth-child(1)`  
**WCAG SC:** 1.3.1 — Info and Relationships (Level A)  
**Rule:** axe-core — `listitem` ([reference](https://dequeuniversity.com/rules/axe/4.12/listitem?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 38 instances; 9 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### HTML snippet
```html
<li class="dc-c-search-list-item ds-u-padding-top--3">
```

### Description
<li> elements must be contained in a <ul> or <ol>. Detected by axe-core rule listitem on 9 of 2550 scanned pages (38 instances).

### Steps to reproduce
1. Open https://data.cms.gov/provider-data/topics/doctors-clinicians.
2. Locate the element: .dc-c-search-list-item.ds-u-padding-top--3:nth-child(1)
3. Confirm the axe-core finding for rule listitem against WCAG 1.3.1 Info and Relationships.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://data.cms.gov/provider-data/topics/doctors-clinicians
- https://data.cms.gov/provider-data/topics/long-term-care-hospitals
- https://data.cms.gov/provider-data/topics/physician-office-visit-costs
- https://data.cms.gov/provider-data/topics/home-health-services
- https://data.cms.gov/provider-data/topics/hospitals
- https://data.cms.gov/provider-data/topics/inpatient-rehabilitation-facilities
- https://data.cms.gov/provider-data/topics/nursing-homes
- https://data.cms.gov/provider-data/topics/supplier-directory
- https://data.cms.gov/provider-data/topics/dialysis-facilities

### Testing environment
Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
**How to fix:** <li> must be inside a <ul> or <ol>.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/listitem?application=axeAPI

### Example pages
- https://data.cms.gov/provider-data/topics/doctors-clinicians
- https://data.cms.gov/provider-data/topics/long-term-care-hospitals
- https://data.cms.gov/provider-data/topics/physician-office-visit-costs

---

## Presentational children of an element are not focusable (WCAG 1.3.1)

**Bug ID:** `VS-65df7376`  
**Pattern ID:** `VS-d6097011`  
**URL:** https://data.cms.gov/cms-innovation-center-programs/cms-innovation-models-overview/innovation-center-model-summary-information  
**XPath / selector:** `<ul class="list-container__list list-container__list-right">`  
**WCAG SC:** 1.3.1 — Info and Relationships (Level A)  
**Rule:** Siteimprove Alfa — `sia-r68` ([reference](https://alfa.siteimprove.com/rules/sia-r68))  
**Severity:** Moderate  
**Frequency:** 11 instances; 11 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### Description
Presentational children of an element are not focusable. Detected by Siteimprove Alfa rule sia-r68 on 11 of 2550 scanned pages (11 instances).

### Steps to reproduce
1. Open https://data.cms.gov/cms-innovation-center-programs/cms-innovation-models-overview/innovation-center-model-summary-information.
2. Locate the element: <ul class="list-container__list list-container__list-right">
3. Confirm the Siteimprove Alfa finding for rule sia-r68 against WCAG 1.3.1 Info and Relationships.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://data.cms.gov/cms-innovation-center-programs/cms-innovation-models-overview/innovation-center-model-summary-information
- https://data.cms.gov/summary-statistics-on-beneficiary-enrollment/health-insurance-marketplace/health-insurance-exchanges-monthly-effectuated-enrollment
- https://data.cms.gov/cms-innovation-center-programs/disease-episode-based-payment-models/medicare-alternative-payment-model-adoption
- https://data.cms.gov/cms-innovation-center-programs/healthcare-support-models/strong-start-awardees
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-d-spending-by-drug
- https://data.cms.gov/summary-statistics-on-beneficiary-enrollment/medicare-and-medicaid-reports/medicare-monthly-enrollment
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/pending-initial-logging-and-tracking-non-physicians/data/july-24-2026
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-telehealth-trends
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-price-transparency-enforcement-activities-and-outcomes
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-geographic-comparisons/medicare-advantage-geographic-variation-national-state
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-opioid-prescribing-rates/medicare-part-d-opioid-prescribing-rates-by-geography

### Testing environment
Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r68

### Example pages
- https://data.cms.gov/cms-innovation-center-programs/cms-innovation-models-overview/innovation-center-model-summary-information
- https://data.cms.gov/summary-statistics-on-beneficiary-enrollment/health-insurance-marketplace/health-insurance-exchanges-monthly-effectuated-enrollment
- https://data.cms.gov/cms-innovation-center-programs/disease-episode-based-payment-models/medicare-alternative-payment-model-adoption

---

## Links must be distinguishable without relying on color (WCAG 1.4.1)

**Bug ID:** `VS-6757a930`  
**Pattern ID:** `VS-8ade3360`  
**URL:** https://data.cms.gov/resources/medicare-post-acute-care-hospice-by-provider-and-service-methodology  
**XPath / selector:** `#RichTextField-fc79b0f4-e862-496b-8ce1-e7929882c6cc > p:nth-child(2) > a[target="_blank"][rel="noopener noreferrer"]`  
**WCAG SC:** 1.4.1 — Use of Color (Level A)  
**Rule:** axe-core — `link-in-text-block` ([reference](https://dequeuniversity.com/rules/axe/4.12/link-in-text-block?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 69 instances; 7 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### HTML snippet
```html
<a href="https://www.hcup-us.ahrq.gov/toolssoftware/ccsr/ccs_refined.jsp" target="_blank" rel="noopener noreferrer">
```

### Description
Links must be distinguishable without relying on color. Detected by axe-core rule link-in-text-block on 7 of 2550 scanned pages (69 instances).

### Steps to reproduce
1. Open https://data.cms.gov/resources/medicare-post-acute-care-hospice-by-provider-and-service-methodology.
2. Locate the element: #RichTextField-fc79b0f4-e862-496b-8ce1-e7929882c6cc > p:nth-child(2) > a[target="_blank"][rel="noopener noreferrer"]
3. Confirm the axe-core finding for rule link-in-text-block against WCAG 1.4.1 Use of Color.

### Impact
Affects Without color perception (4.5%), Limited vision (2.4%).
- **Without color perception** (4.5% of population)
- **Limited vision** (2.4% of population)

### Affected pages
- https://data.cms.gov/resources/medicare-post-acute-care-hospice-by-provider-and-service-methodology
- https://data.cms.gov/resources/esrd-facility-aggregation-group-performance-data-dictionary
- https://data.cms.gov/about
- https://data.cms.gov/medicare-value-based-payment-modifier-program/value-modifier
- https://data.cms.gov/resources/medicare-physician-other-practitioners-by-provider-data-dictionary-legacy
- https://data.cms.gov/collection/synthetic-medicare-enrollment-fee-for-service-claims-and-prescription-drug-event
- https://data.cms.gov/resources/medicare-durable-medical-equipment-devices-supplies-by-referring-provider-data-dictionary-legacy

### Testing environment
Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/link-in-text-block?application=axeAPI

### Example pages
- https://data.cms.gov/resources/medicare-post-acute-care-hospice-by-provider-and-service-methodology
- https://data.cms.gov/resources/esrd-facility-aggregation-group-performance-data-dictionary
- https://data.cms.gov/about

---

## Scrollable region must have keyboard access (WCAG 2.1.1)

**Bug ID:** `VS-eaab37ac`  
**Pattern ID:** `VS-c613c153`  
**URL:** https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospice-all-owners/data/q4-2025  
**XPath / selector:** `.tbody-container`  
**WCAG SC:** 2.1.1 — Keyboard (Level A)  
**Rule:** axe-core — `scrollable-region-focusable` ([reference](https://dequeuniversity.com/rules/axe/4.12/scrollable-region-focusable?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 558 instances; 558 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### HTML snippet
```html
<div class="tbody-container">
```

### Description
Scrollable region must have keyboard access. Detected by axe-core rule scrollable-region-focusable on 558 of 2550 scanned pages (558 instances).

### Steps to reproduce
1. Open https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospice-all-owners/data/q4-2025.
2. Locate the element: .tbody-container
3. Confirm the axe-core finding for rule scrollable-region-focusable against WCAG 2.1.1 Keyboard.

### Impact
Affects Without vision (1.0%), Limited manipulation/strength (13.0%), Limited reach (2.0%).
- **Without vision** (1.0% of population)
- **Limited manipulation/strength** (13.0% of population)
- **Limited reach** (2.0% of population)

### Affected pages
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospice-all-owners/data/q4-2025
- https://data.cms.gov/medicare-current-beneficiary-survey-mcbs/income-and-asset-ownership/data
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/fiscal-intermediary-shared-system-attending-and-rendering/data/july-31-2026
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-d-spending-by-drug/data
- https://data.cms.gov/cms-innovation-center-programs/disease-episode-based-payment-models/ambulatory-specialty-model-participants/data
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/federally-qualified-health-center-all-owners/data/q1-2025
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-part-b-spending-by-drug/data
- https://data.cms.gov/medicare-shared-savings-program/county-level-aggregate-expenditure-and-risk-score-data-on-assignable-beneficiaries/data/2023
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/order-and-referring/data/september-15-2026
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/home-health-agency-enrollments/data/q3-2025
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/pending-initial-logging-and-tracking-physicians/data/august-18-2026
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/skilled-nursing-facility-change-of-ownership-owner-information/data/q1-2025
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-geography-and-service/data/2018
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/order-and-referring/data/september-18-2026
- https://data.cms.gov/quality-of-care/payroll-based-journal-employee-detail-nursing-home-staffing/data/q3-2024
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-post-acute-care-hospice/medicare-post-acute-care-utilization-home-health-agency-by-geography-and-provider/data
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-part-d-prescribers/medicare-part-d-prescribers-by-provider-and-drug/data/2022
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-supplier-and-service/data/2021
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/rural-health-clinic-enrollments/data
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-post-acute-care-hospice/medicare-post-acute-care-utilization-inpatient-rehabilitation-facility-by-geography-and-provider/data
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-post-acute-care-hospice/medicare-post-acute-care-utilization-skilled-nursing-facility-by-geography-provider-and-service/data/2022
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/home-infusion-therapy-providers/data/june-16-2026
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/data/march-2026
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/rural-health-clinic-enrollments/data/q4-2025
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/pending-initial-logging-and-tracking-non-physicians/data/july-17-2026

…and more — 558 pages total ([download CSV](csv/axe-core__scrollable-region-focusable.csv)).

### Testing environment
Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
**How to fix:** Make scrollable regions keyboard-focusable (tabindex="0") so keyboard users can scroll them.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/scrollable-region-focusable?application=axeAPI

### Example pages
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospice-all-owners/data/q4-2025
- https://data.cms.gov/medicare-current-beneficiary-survey-mcbs/income-and-asset-ownership/data
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/fiscal-intermediary-shared-system-attending-and-rendering/data/july-31-2026

---

## Select element must have an accessible name (WCAG 4.1.2)

**Bug ID:** `VS-b21d1758`  
**Pattern ID:** `VS-fab92378`  
**URL:** https://data.cms.gov/provider-summary-by-type-of-service/medicare-physician-other-practitioners/medicare-physician-other-practitioners-by-provider/api-docs  
**XPath / selector:** `.form-control`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** axe-core — `select-name` ([reference](https://dequeuniversity.com/rules/axe/4.12/select-name?application=axeAPI))  
**Severity:** Critical  
**Frequency:** 98 instances; 98 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### HTML snippet
```html
<select name="version-select" class="form-control">
```

### Description
Select element must have an accessible name. Detected by axe-core rule select-name on 98 of 2550 scanned pages (98 instances).

### Steps to reproduce
1. Open https://data.cms.gov/provider-summary-by-type-of-service/medicare-physician-other-practitioners/medicare-physician-other-practitioners-by-provider/api-docs.
2. Locate the element: .form-control
3. Confirm the axe-core finding for rule select-name against WCAG 4.1.2 Name, Role, Value.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited manipulation/strength** (13.0% of population)

### Affected pages
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-physician-other-practitioners/medicare-physician-other-practitioners-by-provider/api-docs
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-telehealth-trends/api-docs
- https://data.cms.gov/cms-innovation-center-programs/accountable-care-models/aco-reach-providers/api-docs
- https://data.cms.gov/cms-innovation-center-programs/accountable-care-models/next-generation-accountable-care-organization-model-data/api-docs
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-post-acute-care-hospice/medicare-post-acute-care-utilization-hospice-by-geography-and-provider/api-docs
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-supplier/api-docs
- https://data.cms.gov/summary-statistics-on-use-and-payments/physiciansupplier-procedure-summary/api-docs
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-part-d-prescribers/medicare-part-d-prescribers-by-provider-and-drug/api-docs
- https://data.cms.gov/quality-of-care/payroll-based-journal-employee-detail-nursing-home-staffing/api-docs
- https://data.cms.gov/quality-of-care/medicare-dialysis-facilities/api-docs
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/order-and-referring/api-docs
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/skilled-nursing-facility-all-owners/api-docs
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-change-of-ownership/api-docs
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/revalidation-due-date-list/api-docs
- https://data.cms.gov/quality-of-care/nursing-home-chain-performance-measures/api-docs
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/medicare-fee-for-service-public-provider-enrollment/api-docs
- https://data.cms.gov/quality-of-care/deficit-reduction-act-hospital-acquired-condition-measures/api-docs
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-price-transparency-enforcement-activities-and-outcomes/api-docs
- https://data.cms.gov/medicare-shared-savings-program/advance-investment-payment-spend-plan/api-docs
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-b-spending-by-drug/api-docs
- https://data.cms.gov/quality-of-care/minimum-data-set-frequency/api-docs
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-opioid-prescribing-rates/medicare-part-d-opioid-prescribing-rates-by-geography/api-docs
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/revalidation-reassignment-list/api-docs
- https://data.cms.gov/cms-innovation-center-programs/accountable-care-models/aco-reach-eligible-beneficiaries/api-docs

…and more — 98 pages total ([download CSV](csv/axe-core__select-name.csv)).

### Testing environment
Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
**How to fix:** Give the <select> an accessible name via a <label> or aria-label.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/select-name?application=axeAPI

### Example pages
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-physician-other-practitioners/medicare-physician-other-practitioners-by-provider/api-docs
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-telehealth-trends/api-docs

---

## ARIA commands must have an accessible name (WCAG 4.1.2)

**Bug ID:** `VS-e71d7143`  
**Pattern ID:** `VS-5c82bd60`  
**URL:** https://data.cms.gov/provider-data/birthing-friendly-hospitals-and-health-systems  
**XPath / selector:** `.p-dropdown-trigger`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** axe-core — `aria-command-name` ([reference](https://dequeuniversity.com/rules/axe/4.12/aria-command-name?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 1 instances; 1 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### HTML snippet
```html
<div class="p-dropdown-trigger" role="button" aria-haspopup="listbox" aria-expanded="false" data-pc-section="trigger">
```

### Description
ARIA commands must have an accessible name. Detected by axe-core rule aria-command-name on 1 of 2550 scanned pages (1 instances).

### Steps to reproduce
1. Open https://data.cms.gov/provider-data/birthing-friendly-hospitals-and-health-systems.
2. Locate the element: .p-dropdown-trigger
3. Confirm the axe-core finding for rule aria-command-name against WCAG 4.1.2 Name, Role, Value.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited manipulation/strength** (13.0% of population)

### Affected pages
- https://data.cms.gov/provider-data/birthing-friendly-hospitals-and-health-systems

### Testing environment
Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
**How to fix:** Give the command (button/link/menuitem) an accessible name via text or aria-label.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/aria-command-name?application=axeAPI

---

## aria-hidden element does not contain focusable elements (WCAG 4.1.2)

**Bug ID:** `VS-21defd12`  
**Pattern ID:** `VS-f6cf30ff`  
**URL:** https://data.cms.gov/provider-data/dataset/95rg-2usp?page=4  
**XPath / selector:** `<div aria-labelledby="overview__tab" aria-hidden="true" class="ds-c-tabs__panel" id="overview">`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** Siteimprove Alfa — `sia-r17` ([reference](https://alfa.siteimprove.com/rules/sia-r17))  
**Severity:** Moderate  
**Frequency:** 776 instances; 275 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### Description
aria-hidden element does not contain focusable elements. Detected by Siteimprove Alfa rule sia-r17 on 275 of 2550 scanned pages (776 instances).

### Steps to reproduce
1. Open https://data.cms.gov/provider-data/dataset/95rg-2usp?page=4.
2. Locate the element: <div aria-labelledby="overview__tab" aria-hidden="true" class="ds-c-tabs__panel" id="overview">
3. Confirm the Siteimprove Alfa finding for rule sia-r17 against WCAG 4.1.2 Name, Role, Value.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited manipulation/strength** (13.0% of population)

### Affected pages
- https://data.cms.gov/provider-data/dataset/95rg-2usp?page=4
- https://data.cms.gov/provider-data/dataset/medrec?page=3
- https://data.cms.gov/provider-data/dataset/ijh5-nb2v?page=2352
- https://data.cms.gov/provider-data/dataset/0b1a-da3f?page=5
- https://data.cms.gov/provider-data/dataset/ktv_comprehensive?page=3
- https://data.cms.gov/provider-data/dataset/48nr-hqxx?page=2
- https://data.cms.gov/provider-data/dataset/4jcv-atw7?page=5
- https://data.cms.gov/provider-data/dataset/ptds-r8im?page=5
- https://data.cms.gov/provider-data/dataset/0938-3dfa?page=2
- https://data.cms.gov/provider-data/dataset/azum-44iv?page=5
- https://data.cms.gov/provider-data/dataset/029b-dd7e?page=4
- https://data.cms.gov/provider-data/dataset/q9vs-r7wp?page=3
- https://data.cms.gov/provider-data/dataset/k2ze-bqvw?page=5
- https://data.cms.gov/provider-data/dataset/069d-826b?page=1719
- https://data.cms.gov/provider-data/dataset/0b1a-da3f?page=1719
- https://data.cms.gov/provider-data/dataset/f4ga-b9gx?page=3
- https://data.cms.gov/provider-data/dataset/ypbt-wvdk
- https://data.cms.gov/provider-data/dataset/clinical_depression?page=2
- https://data.cms.gov/provider-data/dataset/wue8-3vwe
- https://data.cms.gov/provider-data/dataset/0b1a-da3f?page=2
- https://data.cms.gov/provider-data/dataset/yq43-i98g?page=123
- https://data.cms.gov/provider-data/dataset/yv7e-xc69?page=5
- https://data.cms.gov/provider-data/dataset/m5jg-jg7i
- https://data.cms.gov/provider-data/dataset/if5v-4x48?page=4
- https://data.cms.gov/provider-data/dataset/0ddf-4325?page=5

…and more — 275 pages total ([download CSV](csv/alfa__sia-r17.csv)).

### Testing environment
Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r17

### Example pages
- https://data.cms.gov/provider-data/dataset/95rg-2usp?page=4
- https://data.cms.gov/provider-data/dataset/medrec?page=3
- https://data.cms.gov/provider-data/dataset/ijh5-nb2v?page=2352

---

## Form field has accessible name (WCAG 4.1.2)

**Bug ID:** `VS-f0bb086f`  
**Pattern ID:** `VS-a48e6078`  
**URL:** https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs  
**XPath / selector:** `<select name="version-select" class="form-control">`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** Siteimprove Alfa — `sia-r8` ([reference](https://alfa.siteimprove.com/rules/sia-r8))  
**Severity:** Moderate  
**Frequency:** 48 instances; 48 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### Description
Form field has accessible name. Detected by Siteimprove Alfa rule sia-r8 on 48 of 2550 scanned pages (48 instances).

### Steps to reproduce
1. Open https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs.
2. Locate the element: <select name="version-select" class="form-control">
3. Confirm the Siteimprove Alfa finding for rule sia-r8 against WCAG 4.1.2 Name, Role, Value.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited manipulation/strength** (13.0% of population)

### Affected pages
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-telehealth-trends/api-docs
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-supplier/api-docs
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-part-d-prescribers/medicare-part-d-prescribers-by-provider-and-drug/api-docs
- https://data.cms.gov/quality-of-care/medicare-dialysis-facilities/api-docs
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/medicare-fee-for-service-public-provider-enrollment/api-docs
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-b-spending-by-drug/api-docs
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/revalidation-reassignment-list/api-docs
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/pending-initial-logging-and-tracking-physicians/api-docs
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-inpatient-hospitals/medicare-inpatient-hospitals-by-geography-and-service/api-docs
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-part-b-discarded-drug-units/api-docs
- https://data.cms.gov/summary-statistics-on-use-and-payments/program-integrity-market-saturation-by-type-of-service/market-saturation-utilization-state-county/api-docs
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-referring-provider/api-docs
- https://data.cms.gov/medicare-shared-savings-program/accountable-care-organization-skilled-nursing-facility-affiliates/api-docs
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-inpatient-hospitals/medicare-inpatient-hospitals-by-provider-and-service/api-docs
- https://data.cms.gov/quality-of-care/facility-level-minimum-data-set-frequency/api-docs
- https://data.cms.gov/cms-innovation-center-programs/disease-episode-based-payment-models/ambulatory-specialty-model-participants/api-docs
- https://data.cms.gov/cms-innovation-center-programs/accountable-care-models/reach-acos/api-docs
- https://data.cms.gov/medicare-shared-savings-program/accountable-care-organization-participants/api-docs
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-post-acute-care-hospice/medicare-post-acute-care-utilization-home-health-agency-by-geography-and-provider/api-docs
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-post-acute-care-hospice/medicare-post-acute-care-utilization-home-health-agency-by-geography-provider-and-service/api-docs
- https://data.cms.gov/cms-innovation-center-programs/disease-episode-based-payment-models/medicare-alternative-payment-model-adoption/api-docs
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/home-health-agency-enrollments/api-docs
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-part-d-spending-by-drug/api-docs
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/skilled-nursing-facility-enrollments/api-docs

…and more — 48 pages total ([download CSV](csv/alfa__sia-r8.csv)).

### Testing environment
Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
**How to fix:** Associate the form field with a label.

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r8

### Example pages
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-telehealth-trends/api-docs
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-supplier/api-docs

---

## Component with same name serves same purpose (WCAG 4.1.2)

**Bug ID:** `VS-44e21898`  
**Pattern ID:** `VS-a2a3dffb`  
**URL:** https://data.cms.gov/medicare-current-beneficiary-survey-mcbs  
**XPath / selector:** `<div aria-selected="true" aria-label="slide" role="option" class="slide___3-Nqo slideHorizontal___1NzNV carousel__slide carousel__slide--visible MoreTopicCarousel__slide">`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** Siteimprove Alfa — `sia-r90` ([reference](https://alfa.siteimprove.com/rules/sia-r90))  
**Severity:** Moderate  
**Frequency:** 8 instances; 5 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### Description
Component with same name serves same purpose. Detected by Siteimprove Alfa rule sia-r90 on 5 of 2550 scanned pages (8 instances).

### Steps to reproduce
1. Open https://data.cms.gov/medicare-current-beneficiary-survey-mcbs.
2. Locate the element: <div aria-selected="true" aria-label="slide" role="option" class="slide___3-Nqo slideHorizontal___1NzNV carousel__slide carousel__slide--visible MoreTopicCarousel__slide">
3. Confirm the Siteimprove Alfa finding for rule sia-r90 against WCAG 4.1.2 Name, Role, Value.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited manipulation/strength** (13.0% of population)

### Affected pages
- https://data.cms.gov/medicare-current-beneficiary-survey-mcbs
- https://data.cms.gov/provider-characteristics
- https://data.cms.gov/summary-statistics-on-provider-enrollment
- https://data.cms.gov/covid-19
- https://data.cms.gov/medicare-shared-savings-program

### Testing environment
Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r90

### Example pages
- https://data.cms.gov/medicare-current-beneficiary-survey-mcbs
- https://data.cms.gov/provider-characteristics
- https://data.cms.gov/summary-statistics-on-provider-enrollment

---

## Button has accessible name (WCAG 4.1.2)

**Bug ID:** `VS-d42071df`  
**Pattern ID:** `VS-29f9f921`  
**URL:** https://data.cms.gov/provider-data/birthing-friendly-hospitals-and-health-systems  
**XPath / selector:** `<div class="p-dropdown-trigger" role="button" aria-haspopup="listbox" aria-expanded="false">`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** Siteimprove Alfa — `sia-r12` ([reference](https://alfa.siteimprove.com/rules/sia-r12))  
**Severity:** Moderate  
**Frequency:** 1 instances; 1 of 2550 pages affected
  
**History:** first seen 2026-W27, last seen 2026-W40 (8 weeks)

### Description
Button has accessible name. Detected by Siteimprove Alfa rule sia-r12 on 1 of 2550 scanned pages (1 instances).

### Steps to reproduce
1. Open https://data.cms.gov/provider-data/birthing-friendly-hospitals-and-health-systems.
2. Locate the element: <div class="p-dropdown-trigger" role="button" aria-haspopup="listbox" aria-expanded="false">
3. Confirm the Siteimprove Alfa finding for rule sia-r12 against WCAG 4.1.2 Name, Role, Value.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited manipulation/strength** (13.0% of population)

### Affected pages
- https://data.cms.gov/provider-data/birthing-friendly-hospitals-and-health-systems

### Testing environment
Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
**How to fix:** Give the button an accessible name via text, aria-label, or aria-labelledby.

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r12

---

## Elements must meet minimum color contrast ratio thresholds (WCAG 1.4.3)

**Bug ID:** `VS-50fa3ec2`  
**Pattern ID:** `VS-be8d563e`  
**URL:** https://data.cms.gov/provider-data/datasets?theme%5B0%5D=Physician+office+visit+costs  
**XPath / selector:** `.dc-c-search-list-item.ds-u-padding-top--3:nth-child(1) > .dc-c-searchlist-item.ds-u-border-top--1 > .ds-u-flex-direction--row.ds-u-md-justify-content--start.ds-u-margin-x--0 > .ds-u-padding-x--0:nth-child(3) > .dkan-disabled-link-wrapper.ds-u-text-align--left.ds-l-col--4 > .ds-c-tooltip__container > .ds-c-tooltip__trigger.dkan-disabled-link`  
**WCAG SC:** 1.4.3 — Contrast (Minimum) (Level AA)  
**Rule:** axe-core — `color-contrast` ([reference](https://dequeuniversity.com/rules/axe/4.12/color-contrast?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 16 instances; 7 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### HTML snippet
```html
<a class="ds-c-tooltip__trigger dkan-disabled-link" tabindex="0">
```

### Description
Elements must meet minimum color contrast ratio thresholds. Detected by axe-core rule color-contrast on 7 of 2550 scanned pages (16 instances).

### Steps to reproduce
1. Open https://data.cms.gov/provider-data/datasets?theme%5B0%5D=Physician+office+visit+costs.
2. Locate the element: .dc-c-search-list-item.ds-u-padding-top--3:nth-child(1) > .dc-c-searchlist-item.ds-u-border-top--1 > .ds-u-flex-direction--row.ds-u-md-justify-content--start.ds-u-margin-x--0 > .ds-u-padding-x--0:nth-child(3) > .dkan-disabled-link-wrapper.ds-u-text-align--left.ds-l-col--4 > .ds-c-tooltip__container > .ds-c-tooltip__trigger.dkan-disabled-link
3. Confirm the axe-core finding for rule color-contrast against WCAG 1.4.3 Contrast (Minimum).

### Impact
Affects Limited vision (2.4%), Without color perception (4.5%).
- **Limited vision** (2.4% of population)
- **Without color perception** (4.5% of population)

### Affected pages
- https://data.cms.gov/provider-data/datasets?theme%5B0%5D=Physician+office+visit+costs
- https://data.cms.gov/provider-data/datasets?keyword%5B%5D=Hospice+and+Palliative+Care
- https://data.cms.gov/provider-data/datasets?keyword%5B%5D=Cardiac+Surgery
- https://data.cms.gov/provider-data/datasets?keyword%5B%5D=Neuropsychiatry
- https://data.cms.gov/provider-data/datasets?keyword%5B%5D=Physical+Therapist+in+Private+Practice
- https://data.cms.gov/provider-data/datasets?keyword%5B%5D=Physician+Assistant
- https://data.cms.gov/provider-data/datasets?keyword%5B%5D=Pulmonary+Disease

### Testing environment
Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
**How to fix:** Increase the contrast between text and its background to at least 4.5:1 (3:1 for large text). Check both light and dark modes.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/color-contrast?application=axeAPI

### Example pages
- https://data.cms.gov/provider-data/datasets?theme%5B0%5D=Physician+office+visit+costs
- https://data.cms.gov/provider-data/datasets?keyword%5B%5D=Hospice+and+Palliative+Care
- https://data.cms.gov/provider-data/datasets?keyword%5B%5D=Cardiac+Surgery

---

## Text has sufficient color contrast (Enhanced) (WCAG 1.4.3)

**Bug ID:** `VS-af0c0b61`  
**Pattern ID:** `VS-f7e99f4b`  
**URL:** https://data.cms.gov/resources/mcbs-summary-tables-glossary  
**XPath / selector:** `text: "A federal government website managed and paid for by the U.S. Centers for Medicare & Medicaid Services."`  
**WCAG SC:** 1.4.3 — Contrast (Minimum) (Level AA)  
**Rule:** Siteimprove Alfa — `sia-r69` ([reference](https://alfa.siteimprove.com/rules/sia-r69))  
**Severity:** Moderate  
**Frequency:** 6590 instances; 537 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### Description
Text has sufficient color contrast (Enhanced). Detected by Siteimprove Alfa rule sia-r69 on 537 of 2550 scanned pages (6590 instances).

### Steps to reproduce
1. Open https://data.cms.gov/resources/mcbs-summary-tables-glossary.
2. Locate the element: text: "A federal government website managed and paid for by the U.S. Centers for Medicare & Medicaid Services."
3. Confirm the Siteimprove Alfa finding for rule sia-r69 against WCAG 1.4.3 Contrast (Minimum).

### Impact
Affects Limited vision (2.4%), Without color perception (4.5%).
- **Limited vision** (2.4% of population)
- **Without color perception** (4.5% of population)

### Affected pages
- https://data.cms.gov/resources/mcbs-summary-tables-glossary
- https://data.cms.gov/medicare-current-beneficiary-survey-mcbs/income-and-asset-ownership/data
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs
- https://data.cms.gov/cms-innovation-center-programs/disease-episode-based-payment-models/ambulatory-specialty-model-participants/data
- https://data.cms.gov/resources/public-reporting-of-missing-digital-contact-information-data-dictionary
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-telehealth-trends/api-docs
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-inpatient-hospitals/medicare-inpatient-hospitals-by-provider
- https://data.cms.gov/cms-innovation-center-programs/cms-innovation-models-overview/innovation-center-model-summary-information
- https://data.cms.gov/resources/value-modifier-data-dictionary
- https://data.cms.gov/tools/medicare-part-d-prescriber-look-up-tool
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/pending-initial-logging-and-tracking-physicians/data/august-18-2026
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/skilled-nursing-facility-change-of-ownership-owner-information/data/q1-2025
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-geography-and-service/data/2018
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/federally-qualified-health-center-all-owners
- https://data.cms.gov/resources/minimum-data-set-frequency-methodology
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-post-acute-care-hospice/medicare-post-acute-care-utilization-home-health-agency-by-geography-and-provider/data
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-part-d-prescribers/medicare-part-d-prescribers-by-provider-and-drug/data/2022
- https://data.cms.gov/resources/county-level-aggregate-expenditure-and-risk-score-data-on-assignable-beneficiaries-methodology-2021-2023
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-supplier-and-service/data/2021
- https://data.cms.gov/resources/medicare-service-type-reports-methodology
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-supplier/api-docs
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-post-acute-care-hospice/medicare-post-acute-care-utilization-skilled-nursing-facility-by-geography-provider-and-service/data/2022
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/home-infusion-therapy-providers/data/june-16-2026
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/data/march-2026
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/pending-initial-logging-and-tracking-non-physicians/data/july-17-2026

…and more — 537 pages total ([download CSV](csv/alfa__sia-r69.csv)).

### Testing environment
Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
**How to fix:** Increase text contrast to meet WCAG AA (4.5:1, or 3:1 for large text).

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r69

### Example pages
- https://data.cms.gov/resources/mcbs-summary-tables-glossary
- https://data.cms.gov/medicare-current-beneficiary-survey-mcbs/income-and-asset-ownership/data
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs

---

## Text has enhanced contrast (WCAG 1.4.6)

**Bug ID:** `VS-6cac155b`  
**Pattern ID:** `VS-646b1e0b`  
**URL:** https://data.cms.gov/resources/mcbs-summary-tables-glossary  
**XPath / selector:** `text: "Definition"`  
**WCAG SC:** 1.4.6 — Contrast (Enhanced) (Level AAA)  
**Rule:** Siteimprove Alfa — `sia-r66` ([reference](https://alfa.siteimprove.com/rules/sia-r66))  
**Severity:** Moderate  
**Frequency:** 15044 instances; 538 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### Description
Text has enhanced contrast. Detected by Siteimprove Alfa rule sia-r66 on 538 of 2550 scanned pages (15044 instances).

### Steps to reproduce
1. Open https://data.cms.gov/resources/mcbs-summary-tables-glossary.
2. Locate the element: text: "Definition"
3. Confirm the Siteimprove Alfa finding for rule sia-r66 against WCAG 1.4.6 Contrast (Enhanced).

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://data.cms.gov/resources/mcbs-summary-tables-glossary
- https://data.cms.gov/medicare-current-beneficiary-survey-mcbs/income-and-asset-ownership/data
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs
- https://data.cms.gov/cms-innovation-center-programs/disease-episode-based-payment-models/ambulatory-specialty-model-participants/data
- https://data.cms.gov/resources/public-reporting-of-missing-digital-contact-information-data-dictionary
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-telehealth-trends/api-docs
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-inpatient-hospitals/medicare-inpatient-hospitals-by-provider
- https://data.cms.gov/cms-innovation-center-programs/cms-innovation-models-overview/innovation-center-model-summary-information
- https://data.cms.gov/resources/value-modifier-data-dictionary
- https://data.cms.gov/tools/medicare-part-d-prescriber-look-up-tool
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/pending-initial-logging-and-tracking-physicians/data/august-18-2026
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/skilled-nursing-facility-change-of-ownership-owner-information/data/q1-2025
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-geography-and-service/data/2018
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/federally-qualified-health-center-all-owners
- https://data.cms.gov/resources/minimum-data-set-frequency-methodology
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-post-acute-care-hospice/medicare-post-acute-care-utilization-home-health-agency-by-geography-and-provider/data
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-part-d-prescribers/medicare-part-d-prescribers-by-provider-and-drug/data/2022
- https://data.cms.gov/resources/county-level-aggregate-expenditure-and-risk-score-data-on-assignable-beneficiaries-methodology-2021-2023
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-supplier-and-service/data/2021
- https://data.cms.gov/resources/medicare-service-type-reports-methodology
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-supplier/api-docs
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-post-acute-care-hospice/medicare-post-acute-care-utilization-skilled-nursing-facility-by-geography-provider-and-service/data/2022
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/home-infusion-therapy-providers/data/june-16-2026
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/data/march-2026
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/pending-initial-logging-and-tracking-non-physicians/data/july-17-2026

…and more — 538 pages total ([download CSV](csv/alfa__sia-r66.csv)).

### Testing environment
Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
**How to fix:** Increase text contrast to meet WCAG AAA (7:1).

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r66

### Example pages
- https://data.cms.gov/resources/mcbs-summary-tables-glossary
- https://data.cms.gov/medicare-current-beneficiary-survey-mcbs/income-and-asset-ownership/data
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs

---

## Text has minimum contrast ratio of 4.5:1 (WCAG 1.4.8)

**Bug ID:** `VS-813d6900`  
**Pattern ID:** `VS-2208081b`  
**URL:** https://data.cms.gov/resources/mcbs-summary-tables-glossary  
**XPath / selector:** `<p class="usa-banner__header-text">`  
**WCAG SC:** 1.4.8 — Visual Presentation (Level AAA)  
**Rule:** Siteimprove Alfa — `sia-r73` ([reference](https://alfa.siteimprove.com/rules/sia-r73))  
**Severity:** Moderate  
**Frequency:** 11353 instances; 884 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### Description
Text has minimum contrast ratio of 4.5:1. Detected by Siteimprove Alfa rule sia-r73 on 884 of 2550 scanned pages (11353 instances).

### Steps to reproduce
1. Open https://data.cms.gov/resources/mcbs-summary-tables-glossary.
2. Locate the element: <p class="usa-banner__header-text">
3. Confirm the Siteimprove Alfa finding for rule sia-r73 against WCAG 1.4.8 Visual Presentation.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://data.cms.gov/resources/mcbs-summary-tables-glossary
- https://data.cms.gov/medicare-current-beneficiary-survey-mcbs/income-and-asset-ownership/data
- https://data.cms.gov/provider-data/dataset/95rg-2usp?page=4
- https://data.cms.gov/provider-data/dataset/medrec?page=3
- https://data.cms.gov/provider-data/dataset/ijh5-nb2v?page=2352
- https://data.cms.gov/provider-data/datasets?theme%5B0%5D=Physician+office+visit+costs
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs
- https://data.cms.gov/cms-innovation-center-programs/disease-episode-based-payment-models/ambulatory-specialty-model-participants/data
- https://data.cms.gov/resources/public-reporting-of-missing-digital-contact-information-data-dictionary
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-telehealth-trends/api-docs
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-inpatient-hospitals/medicare-inpatient-hospitals-by-provider
- https://data.cms.gov/cms-innovation-center-programs/cms-innovation-models-overview/innovation-center-model-summary-information
- https://data.cms.gov/provider-data/datasets?keyword%5B%5D=Cancer
- https://data.cms.gov/provider-data/dataset/0b1a-da3f?page=5
- https://data.cms.gov/provider-data/dataset/ktv_comprehensive?page=3
- https://data.cms.gov/provider-data/dataset/48nr-hqxx?page=2
- https://data.cms.gov/resources/value-modifier-data-dictionary
- https://data.cms.gov/tools/medicare-part-d-prescriber-look-up-tool
- https://data.cms.gov/provider-data/datasets?theme%5B0%5D=Hospitals
- https://data.cms.gov/provider-data/datasets?keyword%5B%5D=Rural
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/pending-initial-logging-and-tracking-physicians/data/august-18-2026
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/skilled-nursing-facility-change-of-ownership-owner-information/data/q1-2025
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-geography-and-service/data/2018
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/federally-qualified-health-center-all-owners
- https://data.cms.gov/resources/minimum-data-set-frequency-methodology

…and more — 884 pages total ([download CSV](csv/alfa__sia-r73.csv)).

### Testing environment
Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r73

### Example pages
- https://data.cms.gov/resources/mcbs-summary-tables-glossary
- https://data.cms.gov/medicare-current-beneficiary-survey-mcbs/income-and-asset-ownership/data
- https://data.cms.gov/provider-data/dataset/95rg-2usp?page=4

---

## Link is distinguishable without relying on color (WCAG 1.4.8)

**Bug ID:** `VS-422376a0`  
**Pattern ID:** `VS-fbf54eba`  
**URL:** https://data.cms.gov/tools/medicare-part-d-prescriber-look-up-tool  
**XPath / selector:** `<p class="latestDateAvailable">`  
**WCAG SC:** 1.4.8 — Visual Presentation (Level AAA)  
**Rule:** Siteimprove Alfa — `sia-r74` ([reference](https://alfa.siteimprove.com/rules/sia-r74))  
**Severity:** Moderate  
**Frequency:** 21 instances; 21 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### Description
Link is distinguishable without relying on color. Detected by Siteimprove Alfa rule sia-r74 on 21 of 2550 scanned pages (21 instances).

### Steps to reproduce
1. Open https://data.cms.gov/tools/medicare-part-d-prescriber-look-up-tool.
2. Locate the element: <p class="latestDateAvailable">
3. Confirm the Siteimprove Alfa finding for rule sia-r74 against WCAG 1.4.8 Visual Presentation.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://data.cms.gov/tools/medicare-part-d-prescriber-look-up-tool
- https://data.cms.gov/tools/provider-opt-out-affidavits-look-up-tool
- https://data.cms.gov/tools/medicaid-managed-care-dashboard
- https://data.cms.gov/medicare-current-beneficiary-survey-mcbs
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-post-acute-care-hospice
- https://data.cms.gov/provider-characteristics
- https://data.cms.gov/summary-statistics-on-beneficiary-enrollment/health-insurance-marketplace
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug
- https://data.cms.gov/provider-compliance/fee-for-service-error-rate-improper-payment
- https://data.cms.gov/cms-innovation-center-programs/alternative-payments-medicare-diabetes-prevention-program
- https://data.cms.gov/tools/mapping-medicare-disparities-by-population
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-premium-reports
- https://data.cms.gov/provider-summary-by-type-of-service/provider-service-classifications
- https://data.cms.gov/tools/mapping-medicare-disparities-by-hospital
- https://data.cms.gov/cms-innovation-center-programs/accountable-care-models
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies
- https://data.cms.gov/summary-statistics-on-provider-enrollment
- https://data.cms.gov/cms-innovation-center-programs/disease-episode-based-payment-models
- https://data.cms.gov/covid-19
- https://data.cms.gov/tools/medicare-part-b-drug-spending-dashboard
- https://data.cms.gov/medicare-shared-savings-program

### Testing environment
Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r74

### Example pages
- https://data.cms.gov/tools/medicare-part-d-prescriber-look-up-tool
- https://data.cms.gov/tools/provider-opt-out-affidavits-look-up-tool
- https://data.cms.gov/tools/medicaid-managed-care-dashboard

---

## Target size is at least 44×44 CSS pixels (Enhanced) (WCAG 2.5.5)

**Bug ID:** `VS-1ae5e01e`  
**Pattern ID:** `VS-cb53cc4d`  
**URL:** https://data.cms.gov/resources/mcbs-summary-tables-glossary  
**XPath / selector:** `<a href="/search" title="">`  
**WCAG SC:** 2.5.5 — Target Size (Enhanced) (Level AAA)  
**Rule:** Siteimprove Alfa — `sia-r111` ([reference](https://alfa.siteimprove.com/rules/sia-r111))  
**Severity:** Moderate  
**Frequency:** 22023 instances; 884 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### Description
Target size is at least 44×44 CSS pixels (Enhanced). Detected by Siteimprove Alfa rule sia-r111 on 884 of 2550 scanned pages (22023 instances).

### Steps to reproduce
1. Open https://data.cms.gov/resources/mcbs-summary-tables-glossary.
2. Locate the element: <a href="/search" title="">
3. Confirm the Siteimprove Alfa finding for rule sia-r111 against WCAG 2.5.5 Target Size (Enhanced).

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://data.cms.gov/resources/mcbs-summary-tables-glossary
- https://data.cms.gov/medicare-current-beneficiary-survey-mcbs/income-and-asset-ownership/data
- https://data.cms.gov/provider-data/dataset/95rg-2usp?page=4
- https://data.cms.gov/provider-data/dataset/medrec?page=3
- https://data.cms.gov/provider-data/dataset/ijh5-nb2v?page=2352
- https://data.cms.gov/provider-data/datasets?theme%5B0%5D=Physician+office+visit+costs
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs
- https://data.cms.gov/cms-innovation-center-programs/disease-episode-based-payment-models/ambulatory-specialty-model-participants/data
- https://data.cms.gov/resources/public-reporting-of-missing-digital-contact-information-data-dictionary
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-telehealth-trends/api-docs
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-inpatient-hospitals/medicare-inpatient-hospitals-by-provider
- https://data.cms.gov/cms-innovation-center-programs/cms-innovation-models-overview/innovation-center-model-summary-information
- https://data.cms.gov/provider-data/datasets?keyword%5B%5D=Cancer
- https://data.cms.gov/provider-data/dataset/0b1a-da3f?page=5
- https://data.cms.gov/provider-data/dataset/ktv_comprehensive?page=3
- https://data.cms.gov/provider-data/dataset/48nr-hqxx?page=2
- https://data.cms.gov/resources/value-modifier-data-dictionary
- https://data.cms.gov/tools/medicare-part-d-prescriber-look-up-tool
- https://data.cms.gov/provider-data/datasets?theme%5B0%5D=Hospitals
- https://data.cms.gov/provider-data/datasets?keyword%5B%5D=Rural
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/pending-initial-logging-and-tracking-physicians/data/august-18-2026
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/skilled-nursing-facility-change-of-ownership-owner-information/data/q1-2025
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-geography-and-service/data/2018
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/federally-qualified-health-center-all-owners
- https://data.cms.gov/resources/minimum-data-set-frequency-methodology

…and more — 884 pages total ([download CSV](csv/alfa__sia-r111.csv)).

### Testing environment
Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r111

### Example pages
- https://data.cms.gov/resources/mcbs-summary-tables-glossary
- https://data.cms.gov/medicare-current-beneficiary-survey-mcbs/income-and-asset-ownership/data
- https://data.cms.gov/provider-data/dataset/95rg-2usp?page=4

---

## Banner landmark should not be contained in another landmark (WCAG criterion undetermined)

**Bug ID:** `VS-37c9e032`  
**Pattern ID:** `VS-30db094d`  
**URL:** https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospice-all-owners/data/q4-2025  
**XPath / selector:** `.Header`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `landmark-banner-is-top-level` ([reference](https://dequeuniversity.com/rules/axe/4.12/landmark-banner-is-top-level?application=axeAPI))  
**Severity:** Moderate  
**Frequency:** 1093 instances; 1093 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### HTML snippet
```html
<header class="Header" style="position: sticky;">
```

### Description
Banner landmark should not be contained in another landmark. Detected by axe-core rule landmark-banner-is-top-level on 1093 of 2550 scanned pages (1093 instances).

### Steps to reproduce
1. Open https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospice-all-owners/data/q4-2025.
2. Locate the element: .Header
3. Confirm the axe-core finding for rule landmark-banner-is-top-level.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospice-all-owners/data/q4-2025
- https://data.cms.gov/resources/mcbs-summary-tables-glossary
- https://data.cms.gov/medicare-current-beneficiary-survey-mcbs/income-and-asset-ownership/data
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-physician-other-practitioners/medicare-physician-other-practitioners-by-provider/api-docs
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/fiscal-intermediary-shared-system-attending-and-rendering/data/july-31-2026
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-d-spending-by-drug/data
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs
- https://data.cms.gov/cms-innovation-center-programs/disease-episode-based-payment-models/ambulatory-specialty-model-participants/data
- https://data.cms.gov/resources/public-reporting-of-missing-digital-contact-information-data-dictionary
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-telehealth-trends/api-docs
- https://data.cms.gov/resources/number-of-accountable-care-organization-assigned-beneficiaries-by-county-data-dictionary-2023
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-inpatient-hospitals/medicare-inpatient-hospitals-by-provider
- https://data.cms.gov/cms-innovation-center-programs/cms-innovation-models-overview/innovation-center-model-summary-information
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/federally-qualified-health-center-all-owners/data/q1-2025
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-part-b-spending-by-drug/data
- https://data.cms.gov/medicare-shared-savings-program/county-level-aggregate-expenditure-and-risk-score-data-on-assignable-beneficiaries/data/2023
- https://data.cms.gov/resources/value-modifier-data-dictionary
- https://data.cms.gov/tools/medicare-part-d-prescriber-look-up-tool
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/order-and-referring/data/september-15-2026
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/home-health-agency-enrollments/data/q3-2025
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/pending-initial-logging-and-tracking-physicians/data/august-18-2026
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/skilled-nursing-facility-change-of-ownership-owner-information/data/q1-2025
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-geography-and-service/data/2018
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/federally-qualified-health-center-all-owners
- https://data.cms.gov/resources/aco-reach-financial-and-quality-results-data-dictionary

…and more — 1093 pages total ([download CSV](csv/axe-core__landmark-banner-is-top-level.csv)).

### Testing environment
Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
**How to fix:** Put the banner landmark (<header>) at the top level, not nested inside another landmark.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/landmark-banner-is-top-level?application=axeAPI

### Example pages
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospice-all-owners/data/q4-2025
- https://data.cms.gov/resources/mcbs-summary-tables-glossary
- https://data.cms.gov/medicare-current-beneficiary-survey-mcbs/income-and-asset-ownership/data

---

## Heading levels should only increase by one (WCAG criterion undetermined)

**Bug ID:** `VS-32eef4c9`  
**Pattern ID:** `VS-d25f622d`  
**URL:** https://data.cms.gov/provider-summary-by-type-of-service/medicare-physician-other-practitioners/medicare-physician-other-practitioners-by-provider/api-docs  
**XPath / selector:** `.apiDocsContainer.container:nth-child(1) > .row > .col > h3`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `heading-order` ([reference](https://dequeuniversity.com/rules/axe/4.12/heading-order?application=axeAPI))  
**Severity:** Moderate  
**Frequency:** 284 instances; 236 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### HTML snippet
```html
<h3>Dataset Information</h3>
```

### Description
Heading levels should only increase by one. Detected by axe-core rule heading-order on 236 of 2550 scanned pages (284 instances).

### Steps to reproduce
1. Open https://data.cms.gov/provider-summary-by-type-of-service/medicare-physician-other-practitioners/medicare-physician-other-practitioners-by-provider/api-docs.
2. Locate the element: .apiDocsContainer.container:nth-child(1) > .row > .col > h3
3. Confirm the axe-core finding for rule heading-order.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-physician-other-practitioners/medicare-physician-other-practitioners-by-provider/api-docs
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-telehealth-trends/api-docs
- https://data.cms.gov/cms-innovation-center-programs/accountable-care-models/aco-reach-providers/api-docs
- https://data.cms.gov/cms-innovation-center-programs/accountable-care-models/next-generation-accountable-care-organization-model-data/api-docs
- https://data.cms.gov/resources/medicare-service-type-reports-methodology
- https://data.cms.gov/datasets?page=8&theme%5B0%5D=Hospitals
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-post-acute-care-hospice/medicare-post-acute-care-utilization-hospice-by-geography-and-provider/api-docs
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-supplier/api-docs
- https://data.cms.gov/summary-statistics-on-use-and-payments/physiciansupplier-procedure-summary/api-docs
- https://data.cms.gov/datasets?page=3&theme%5B0%5D=Dialysis+facilities
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-part-d-prescribers/medicare-part-d-prescribers-by-provider-and-drug/api-docs
- https://data.cms.gov/datasets?keyword%5B0%5D=Quality&page=3
- https://data.cms.gov/resources/fee-for-service-public-provider-enrollment-methodology-q1-2023-q2-2025
- https://data.cms.gov/provider-data/topics/dialysis-facilities/measures
- https://data.cms.gov/datasets?page=3
- https://data.cms.gov/resources/medicare-inpatient-hospitals-by-provider-data-dictionary-2013-2016
- https://data.cms.gov/quality-of-care/payroll-based-journal-employee-detail-nursing-home-staffing/api-docs
- https://data.cms.gov/quality-of-care/medicare-dialysis-facilities/api-docs
- https://data.cms.gov/resources/independent-dispute-resolution-methodology
- https://data.cms.gov/datasets?page=2
- https://data.cms.gov/resources/medicare-telehealth-trends-data-dictionary-q3-2024
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/order-and-referring/api-docs
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/skilled-nursing-facility-all-owners/api-docs
- https://data.cms.gov/resources/hospital-provider-cost-report-methodology

…and more — 236 pages total ([download CSV](csv/axe-core__heading-order.csv)).

### Testing environment
Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
**How to fix:** Use heading levels in order (h1 → h2 → h3) without skipping; structure, not size.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/heading-order?application=axeAPI

### Example pages
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-physician-other-practitioners/medicare-physician-other-practitioners-by-provider/api-docs
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-telehealth-trends/api-docs

---

## Landmarks should have a unique role or role/label/title (i.e. accessible name) c (WCAG criterion undetermined)

**Bug ID:** `VS-8d8aa5bf`  
**Pattern ID:** `VS-8806389c`  
**URL:** https://data.cms.gov/tools/medicare-part-d-prescriber-look-up-tool  
**XPath / selector:** `.desktop`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `landmark-unique` ([reference](https://dequeuniversity.com/rules/axe/4.12/landmark-unique?application=axeAPI))  
**Severity:** Moderate  
**Frequency:** 19 instances; 19 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### HTML snippet
```html
<nav aria-label="breadcrumb" class="DatasetHero__breadcrumb desktop">
```

### Description
Landmarks should have a unique role or role/label/title (i.e. accessible name) c. Detected by axe-core rule landmark-unique on 19 of 2550 scanned pages (19 instances).

### Steps to reproduce
1. Open https://data.cms.gov/tools/medicare-part-d-prescriber-look-up-tool.
2. Locate the element: .desktop
3. Confirm the axe-core finding for rule landmark-unique.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://data.cms.gov/tools/medicare-part-d-prescriber-look-up-tool
- https://data.cms.gov/tools/medicare-part-d-drug-spending-dashboard
- https://data.cms.gov/tools/provider-opt-out-affidavits-look-up-tool
- https://data.cms.gov/tools/medicaid-managed-care-dashboard
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-d-spending-by-drug
- https://data.cms.gov/tools/market-saturation-utilization-state-county-mapping-tool
- https://data.cms.gov/tools/mapping-medicare-disparities-by-population
- https://data.cms.gov/tools/geographic-variation-in-standardized-medicare-spending-county
- https://data.cms.gov/provider-data/about/contact-us
- https://data.cms.gov/tools/mapping-disparities-by-social-determinants-of-health
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-b-spending-by-drug
- https://data.cms.gov/tools/mapping-medicare-disparities-by-hospital
- https://data.cms.gov/provider-data/about/api
- https://data.cms.gov/provider-data/about/program-overview
- https://data.cms.gov/tools/medicare-physician-other-practitioner-look-up-tool
- https://data.cms.gov/tools/market-saturation-utilization-core-based-statistical-areas-mapping-tool
- https://data.cms.gov/tools/medicaid-drug-spending-dashboard
- https://data.cms.gov/provider-data/about/faq
- https://data.cms.gov/tools/medicare-part-b-drug-spending-dashboard

### Testing environment
Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
**How to fix:** When a landmark role/type repeats (e.g. two <nav>s), give each a distinct accessible name with aria-label or aria-labelledby (e.g. "Primary" and "Footer" navigation) so screen-reader users can tell them apart.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/landmark-unique?application=axeAPI

### Example pages
- https://data.cms.gov/tools/medicare-part-d-prescriber-look-up-tool
- https://data.cms.gov/tools/medicare-part-d-drug-spending-dashboard
- https://data.cms.gov/tools/provider-opt-out-affidavits-look-up-tool

---

## Table header text should not be empty (WCAG criterion undetermined)

**Bug ID:** `VS-b3bd2b0f`  
**Pattern ID:** `VS-d69fc059`  
**URL:** https://data.cms.gov/provider-data/topics/nursing-homes/quality-measures  
**XPath / selector:** `#nb`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `empty-table-header` ([reference](https://dequeuniversity.com/rules/axe/4.12/empty-table-header?application=axeAPI))  
**Severity:** Minor  
**Frequency:** 5 instances; 3 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### HTML snippet
```html
<th id="nb" scope="col"><span>&nbsp;</span></th>
```

### Description
Table header text should not be empty. Detected by axe-core rule empty-table-header on 3 of 2550 scanned pages (5 instances).

### Steps to reproduce
1. Open https://data.cms.gov/provider-data/topics/nursing-homes/quality-measures.
2. Locate the element: #nb
3. Confirm the axe-core finding for rule empty-table-header.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://data.cms.gov/provider-data/topics/nursing-homes/quality-measures
- https://data.cms.gov/provider-data/topics/home-health-services/measuring-agency-performance
- https://data.cms.gov/resources/geographic-variation-methodology-2018

### Testing environment
Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/empty-table-header?application=axeAPI

### Example pages
- https://data.cms.gov/provider-data/topics/nursing-homes/quality-measures
- https://data.cms.gov/provider-data/topics/home-health-services/measuring-agency-performance
- https://data.cms.gov/resources/geographic-variation-methodology-2018

---

## Headings should not be empty (WCAG criterion undetermined)

**Bug ID:** `VS-0b06172d`  
**Pattern ID:** `VS-0066c67d`  
**URL:** https://data.cms.gov/provider-data/dataset/pudb-wetr?page=99  
**XPath / selector:** `h1`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `empty-heading` ([reference](https://dequeuniversity.com/rules/axe/4.12/empty-heading?application=axeAPI))  
**Severity:** Minor  
**Frequency:** 1 instances; 1 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (15 weeks)

### HTML snippet
```html
<h1 class="ds-text-heading--3xl"></h1>
```

### Description
Headings should not be empty. Detected by axe-core rule empty-heading on 1 of 2550 scanned pages (1 instances).

### Steps to reproduce
1. Open https://data.cms.gov/provider-data/dataset/pudb-wetr?page=99.
2. Locate the element: h1
3. Confirm the axe-core finding for rule empty-heading.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://data.cms.gov/provider-data/dataset/pudb-wetr?page=99

### Testing environment
Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
**How to fix:** Remove empty headings or give them text. Don't use heading tags for spacing.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/empty-heading?application=axeAPI

---

## First focusable element is link to main content (WCAG criterion undetermined)

**Bug ID:** `VS-3ca418bf`  
**Pattern ID:** `VS-aa242c2d`  
**URL:** https://data.cms.gov/resources/mcbs-summary-tables-glossary  
**XPath / selector:** `{"type":"document","children":[{"type":"type","name":"html","publicId":null,"sys`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r87` ([reference](https://alfa.siteimprove.com/rules/sia-r87))  
**Severity:** Moderate  
**Frequency:** 538 instances; 538 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### Description
First focusable element is link to main content. Detected by Siteimprove Alfa rule sia-r87 on 538 of 2550 scanned pages (538 instances).

### Steps to reproduce
1. Open https://data.cms.gov/resources/mcbs-summary-tables-glossary.
2. Locate the element: {"type":"document","children":[{"type":"type","name":"html","publicId":null,"sys
3. Confirm the Siteimprove Alfa finding for rule sia-r87.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://data.cms.gov/resources/mcbs-summary-tables-glossary
- https://data.cms.gov/medicare-current-beneficiary-survey-mcbs/income-and-asset-ownership/data
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs
- https://data.cms.gov/cms-innovation-center-programs/disease-episode-based-payment-models/ambulatory-specialty-model-participants/data
- https://data.cms.gov/resources/public-reporting-of-missing-digital-contact-information-data-dictionary
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-telehealth-trends/api-docs
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-inpatient-hospitals/medicare-inpatient-hospitals-by-provider
- https://data.cms.gov/cms-innovation-center-programs/cms-innovation-models-overview/innovation-center-model-summary-information
- https://data.cms.gov/resources/value-modifier-data-dictionary
- https://data.cms.gov/tools/medicare-part-d-prescriber-look-up-tool
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/pending-initial-logging-and-tracking-physicians/data/august-18-2026
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/skilled-nursing-facility-change-of-ownership-owner-information/data/q1-2025
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-geography-and-service/data/2018
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/federally-qualified-health-center-all-owners
- https://data.cms.gov/resources/minimum-data-set-frequency-methodology
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-post-acute-care-hospice/medicare-post-acute-care-utilization-home-health-agency-by-geography-and-provider/data
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-part-d-prescribers/medicare-part-d-prescribers-by-provider-and-drug/data/2022
- https://data.cms.gov/resources/county-level-aggregate-expenditure-and-risk-score-data-on-assignable-beneficiaries-methodology-2021-2023
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-supplier-and-service/data/2021
- https://data.cms.gov/resources/medicare-service-type-reports-methodology
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-supplier/api-docs
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-post-acute-care-hospice/medicare-post-acute-care-utilization-skilled-nursing-facility-by-geography-provider-and-service/data/2022
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/home-infusion-therapy-providers/data/june-16-2026
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/data/march-2026
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/pending-initial-logging-and-tracking-non-physicians/data/july-17-2026

…and more — 538 pages total ([download CSV](csv/alfa__sia-r87.csv)).

### Testing environment
Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r87

### Example pages
- https://data.cms.gov/resources/mcbs-summary-tables-glossary
- https://data.cms.gov/medicare-current-beneficiary-survey-mcbs/income-and-asset-ownership/data
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs

---

## aria attribute is permitted for element role (WCAG criterion undetermined)

**Bug ID:** `VS-eb852c30`  
**Pattern ID:** `VS-e05344b9`  
**URL:** https://data.cms.gov/resources/mcbs-summary-tables-glossary  
**XPath / selector:** `@aria-label="Open Income and Asset Ownership"`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r18` ([reference](https://alfa.siteimprove.com/rules/sia-r18))  
**Severity:** Moderate  
**Frequency:** 589 instances; 143 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### Description
aria attribute is permitted for element role. Detected by Siteimprove Alfa rule sia-r18 on 143 of 2550 scanned pages (589 instances).

### Steps to reproduce
1. Open https://data.cms.gov/resources/mcbs-summary-tables-glossary.
2. Locate the element: @aria-label="Open Income and Asset Ownership"
3. Confirm the Siteimprove Alfa finding for rule sia-r18.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://data.cms.gov/resources/mcbs-summary-tables-glossary
- https://data.cms.gov/resources/public-reporting-of-missing-digital-contact-information-data-dictionary
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-inpatient-hospitals/medicare-inpatient-hospitals-by-provider
- https://data.cms.gov/cms-innovation-center-programs/cms-innovation-models-overview/innovation-center-model-summary-information
- https://data.cms.gov/resources/value-modifier-data-dictionary
- https://data.cms.gov/tools/medicare-part-d-prescriber-look-up-tool
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/federally-qualified-health-center-all-owners
- https://data.cms.gov/resources/minimum-data-set-frequency-methodology
- https://data.cms.gov/resources/medicare-pac-utilization-snf-by-geography-and-provider-data-dictionary
- https://data.cms.gov/resources/provider-of-services-file-clinical-laboratories-methodology
- https://data.cms.gov/summary-statistics-on-beneficiary-enrollment/health-insurance-marketplace/health-insurance-exchanges-monthly-effectuated-enrollment
- https://data.cms.gov/resources/opt-out-affidavits-methodology
- https://data.cms.gov/resources/home-health-agency-cost-report-data-dictionary
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/rural-health-clinic-all-owners
- https://data.cms.gov/cms-innovation-center-programs/disease-episode-based-payment-models/medicare-alternative-payment-model-adoption
- https://data.cms.gov/tools/provider-opt-out-affidavits-look-up-tool
- https://data.cms.gov/tools/medicaid-managed-care-dashboard
- https://data.cms.gov/resources/acos-aco-participants-and-snf-affiliates-methodology
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/cms-program-statistics-medicare-advantage-outpatient-facility
- https://data.cms.gov/cms-innovation-center-programs/accountable-care-models/pioneer-aco-model
- https://data.cms.gov/resources/ambulatory-specialty-model-participants-methodology
- https://data.cms.gov/provider-compliance/cost-reports/skilled-nursing-facility-cost-report
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-part-d-prescribers/medicare-part-d-prescribers-by-provider
- https://data.cms.gov/resources/revoked-medicare-providers-and-suppliers-methodology
- https://data.cms.gov/resources/milestones-and-updates-data-dictionary

…and more — 143 pages total ([download CSV](csv/alfa__sia-r18.csv)).

### Testing environment
Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
**How to fix:** Only use ARIA states/properties that are allowed on this element/role.

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r18

### Example pages
- https://data.cms.gov/resources/mcbs-summary-tables-glossary
- https://data.cms.gov/resources/public-reporting-of-missing-digital-contact-information-data-dictionary
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-inpatient-hospitals/medicare-inpatient-hospitals-by-provider

---

## Headings are structured hierarchically (WCAG criterion undetermined)

**Bug ID:** `VS-ebd64f11`  
**Pattern ID:** `VS-f054f4a4`  
**URL:** https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs  
**XPath / selector:** `<h3>`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r53` ([reference](https://alfa.siteimprove.com/rules/sia-r53))  
**Severity:** Moderate  
**Frequency:** 139 instances; 116 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### Description
Headings are structured hierarchically. Detected by Siteimprove Alfa rule sia-r53 on 116 of 2550 scanned pages (139 instances).

### Steps to reproduce
1. Open https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs.
2. Locate the element: <h3>
3. Confirm the Siteimprove Alfa finding for rule sia-r53.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-telehealth-trends/api-docs
- https://data.cms.gov/resources/medicare-service-type-reports-methodology
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-supplier/api-docs
- https://data.cms.gov/datasets?page=3&theme%5B0%5D=Dialysis+facilities
- https://data.cms.gov/provider-summary-by-type-of-service/medicare-part-d-prescribers/medicare-part-d-prescribers-by-provider-and-drug/api-docs
- https://data.cms.gov/datasets?keyword%5B0%5D=Quality&page=3
- https://data.cms.gov/datasets?page=3
- https://data.cms.gov/quality-of-care/medicare-dialysis-facilities/api-docs
- https://data.cms.gov/resources/independent-dispute-resolution-methodology
- https://data.cms.gov/datasets?page=2
- https://data.cms.gov/resources/medicare-telehealth-trends-data-dictionary-q3-2024
- https://data.cms.gov/resources/aco-reach-aligned-beneficiaries-data-dictionary-2021-2023
- https://data.cms.gov/medicare-current-beneficiary-survey-mcbs
- https://data.cms.gov/resources/medicare-post-acute-care-hospice-by-provider-and-service-methodology
- https://data.cms.gov/resources/geographic-variation-methodology
- https://data.cms.gov/resources/comprehensive-esrd-care-model-data-methodology
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-price-transparency-enforcement-activities-and-outcomes/data/december-2025
- https://data.cms.gov/provider-characteristics
- https://data.cms.gov/resources/mcbs-summary-tables-methodology
- https://data.cms.gov/resources/skilled-nursing-facility-cost-report-methodology
- https://data.cms.gov/datasets?keyword%5B0%5D=Emergency+Department&page=2
- https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/medicare-fee-for-service-public-provider-enrollment/api-docs
- https://data.cms.gov/resources/county-level-aggregate-expenditure-and-risk-score-data-on-assignable-beneficiaries-data-dictionary-2016-2020
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-b-spending-by-drug/api-docs

…and more — 116 pages total ([download CSV](csv/alfa__sia-r53.csv)).

### Testing environment
Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
**How to fix:** Use headings in a logical, non-skipping order.

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r53

### Example pages
- https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs
- https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-telehealth-trends/api-docs
- https://data.cms.gov/resources/medicare-service-type-reports-methodology

---

## Table header has scope (WCAG criterion undetermined)

**Bug ID:** `VS-f2673896`  
**Pattern ID:** `VS-2cd767ca`  
**URL:** https://data.cms.gov/medicare-current-beneficiary-survey-mcbs  
**XPath / selector:** `<h5 class="typeface-05-h5-desktop-regular-white MoreTopicCarouselCard__count">`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r78` ([reference](https://alfa.siteimprove.com/rules/sia-r78))  
**Severity:** Moderate  
**Frequency:** 26 instances; 6 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (17 weeks)

### Description
Table header has scope. Detected by Siteimprove Alfa rule sia-r78 on 6 of 2550 scanned pages (26 instances).

### Steps to reproduce
1. Open https://data.cms.gov/medicare-current-beneficiary-survey-mcbs.
2. Locate the element: <h5 class="typeface-05-h5-desktop-regular-white MoreTopicCarouselCard__count">
3. Confirm the Siteimprove Alfa finding for rule sia-r78.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://data.cms.gov/medicare-current-beneficiary-survey-mcbs
- https://data.cms.gov/provider-characteristics
- https://data.cms.gov/beta/provider-characteristics/medicare-provider-supplier-enrollment/medicare-provider-and-supplier-taxonomy-crosswalk
- https://data.cms.gov/summary-statistics-on-provider-enrollment
- https://data.cms.gov/covid-19
- https://data.cms.gov/medicare-shared-savings-program

### Testing environment
Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r78

### Example pages
- https://data.cms.gov/medicare-current-beneficiary-survey-mcbs
- https://data.cms.gov/provider-characteristics
- https://data.cms.gov/beta/provider-characteristics/medicare-provider-supplier-enrollment/medicare-provider-and-supplier-taxonomy-crosswalk

---

## Scrolling content can be accessed by keyboard (WCAG criterion undetermined)

**Bug ID:** `VS-3afdf6f4`  
**Pattern ID:** `VS-c18be945`  
**URL:** https://data.cms.gov/tools/mapping-medicare-disparities-by-population  
**XPath / selector:** `text: "Population View"`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r57` ([reference](https://alfa.siteimprove.com/rules/sia-r57))  
**Severity:** Moderate  
**Frequency:** 8420 instances; 2 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (16 weeks)

### Description
Scrolling content can be accessed by keyboard. Detected by Siteimprove Alfa rule sia-r57 on 2 of 2550 scanned pages (8420 instances).

### Steps to reproduce
1. Open https://data.cms.gov/tools/mapping-medicare-disparities-by-population.
2. Locate the element: text: "Population View"
3. Confirm the Siteimprove Alfa finding for rule sia-r57.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://data.cms.gov/tools/mapping-medicare-disparities-by-population
- https://data.cms.gov/tools/mapping-medicare-disparities-by-hospital

### Testing environment
Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r57

### Example pages
- https://data.cms.gov/tools/mapping-medicare-disparities-by-population
- https://data.cms.gov/tools/mapping-medicare-disparities-by-hospital

---

## Form field label is visible (WCAG criterion undetermined)

**Bug ID:** `VS-f3e270d2`  
**Pattern ID:** `VS-7118fead`  
**URL:** https://data.cms.gov/provider-data/about/contact-us  
**XPath / selector:** `{"type":"document","children":[{"type":"type","name":"html","publicId":null,"sys`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r61` ([reference](https://alfa.siteimprove.com/rules/sia-r61))  
**Severity:** Moderate  
**Frequency:** 2 instances; 2 of 2550 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W40 (12 weeks)

### Description
Form field label is visible. Detected by Siteimprove Alfa rule sia-r61 on 2 of 2550 scanned pages (2 instances).

### Steps to reproduce
1. Open https://data.cms.gov/provider-data/about/contact-us.
2. Locate the element: {"type":"document","children":[{"type":"type","name":"html","publicId":null,"sys
3. Confirm the Siteimprove Alfa finding for rule sia-r61.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://data.cms.gov/provider-data/about/contact-us
- https://data.cms.gov/provider-data/about/faq

### Testing environment
Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r61

### Example pages
- https://data.cms.gov/provider-data/about/contact-us
- https://data.cms.gov/provider-data/about/faq