data.cms.gov: Toegankelijkheid — week 2026-W40

Automated Accessibility Conformance Report (OpenACR): Download ACR. Machine-readable; compatible with GSA OpenACR tooling. Automated tools find ~⅓ of real barriers — supplement with manual AT testing.

Training priorities

Top WCAG success criteria by pages affected this week. Use these to focus team training on the highest-impact issues.

SC	Criterion	Pages	Rules
1.4.8	WCAG 1.4.8	905	2
2.5.5	WCAG 2.5.5	884	1
2.1.1	Keyboard Access	558	1
1.4.3	Contrast (Minimum)	544	2
1.4.6	WCAG 1.4.6	538	1

Volgende 10 acties

Clusters krijgen een vingerafdruk via genormaliseerd selectorpad + regel-id + snippetvorm. Rangscore = (ernstgewicht × getroffen pagina's) / verschillende componenten voor de regel. Dit vervangt de template-drempelheuristiek, maar behoudt die als validatiesignaal.

Top 10 geclusterde componentoplossingen voor deze week.
Cluster	Ernst	Pagina's	Wie het treft	Hoe op te lossen	Bewijs	Beslissing
Banner landmark should not be contained in another landmark · niet-toegewezen component Fix one place, resolve ~1093 finding(s) on 1093 page(s). XPath / selector: `.Header` `<header class="Header" style="position: sticky;">`	Matig	1093	Vereist handmatige test.	Put the banner landmark (<header>) at the top level, not nested inside another landmark.	pagina's (CSV)	Beslissing Toegewezen aan Notities
Scrollable region must have keyboard access · niet-toegewezen component Fix one place, resolve ~558 finding(s) on 558 page(s). XPath / selector: `.tbody-container` `<div class="tbody-container">`	Ernstig	558	Without vision, Limited manipulation/strength, Limited reach	Make scrollable regions keyboard-focusable (tabindex="0") so keyboard users can scroll them.	pagina's (CSV)	Beslissing Toegewezen aan Notities
First focusable element is link to main content · niet-toegewezen component Fix one place, resolve ~538 finding(s) on 538 page(s). XPath / selector: `{"type":"document","children":[{"type":"type","name":"html","publicId":null,"sys`	Matig	538	Vereist handmatige test.	See remediation guidance: https://alfa.siteimprove.com/rules/sia-r87	pagina's (CSV)	Beslissing Toegewezen aan Notities
Select element must have an accessible name · niet-toegewezen component Fix one place, resolve ~97 finding(s) on 97 page(s). XPath / selector: `.form-control` `<select name="version-select" class="form-control">`	Kritiek	97	Without vision, Limited vision, Limited manipulation/strength	Give the <select> an accessible name via a <label> or aria-label.	pagina's (CSV)	Beslissing Toegewezen aan Notities
Target size is at least 44×44 CSS pixels (Enhanced) · niet-toegewezen component Fix one place, resolve ~538 finding(s) on 538 page(s). XPath / selector: `<a href="/search" title="">`	Matig	538	Vereist handmatige test.	See remediation guidance: https://alfa.siteimprove.com/rules/sia-r111	pagina's (CSV)	Beslissing Toegewezen aan Notities
Target size is at least 44×44 CSS pixels (Enhanced) · niet-toegewezen component Fix one place, resolve ~538 finding(s) on 538 page(s). XPath / selector: `<a href="/tools" title="">`	Matig	538	Vereist handmatige test.	See remediation guidance: https://alfa.siteimprove.com/rules/sia-r111	pagina's (CSV)	Beslissing Toegewezen aan Notities
Target size is at least 44×44 CSS pixels (Enhanced) · niet-toegewezen component Fix one place, resolve ~538 finding(s) on 538 page(s). XPath / selector: `<a href="/browse-data-categories" title="">`	Matig	538	Vereist handmatige test.	See remediation guidance: https://alfa.siteimprove.com/rules/sia-r111	pagina's (CSV)	Beslissing Toegewezen aan Notities
aria-hidden element does not contain focusable elements · niet-toegewezen component Fix one place, resolve ~274 finding(s) on 274 page(s). XPath / selector: `<div aria-labelledby="overview__tab" aria-hidden="true" class="ds-c-tabs__panel" id="overview">`	Matig	274	Without vision, Limited vision, Limited manipulation/strength	See remediation guidance: https://alfa.siteimprove.com/rules/sia-r17	pagina's (CSV)	Beslissing Toegewezen aan Notities
aria-hidden element does not contain focusable elements · niet-toegewezen component Fix one place, resolve ~253 finding(s) on 253 page(s). XPath / selector: `<div aria-labelledby="api__tab" aria-hidden="true" class="ds-c-tabs__panel" id="api">`	Matig	253	Without vision, Limited vision, Limited manipulation/strength	See remediation guidance: https://alfa.siteimprove.com/rules/sia-r17	pagina's (CSV)	Beslissing Toegewezen aan Notities
aria-hidden element does not contain focusable elements · niet-toegewezen component Fix one place, resolve ~248 finding(s) on 248 page(s). XPath / selector: `<div aria-labelledby="data-dictionary__tab" aria-hidden="true" class="ds-c-tabs__panel" id="data-dictionary">`	Matig	248	Without vision, Limited vision, Limited manipulation/strength	See remediation guidance: https://alfa.siteimprove.com/rules/sia-r17	pagina's (CSV)	Beslissing Toegewezen aan Notities

Foutrapporten

12 probleemtype(n) worden standaard getoond van in totaal 31. Geprioriteerd op ernst, belangrijke pagina's, WCAG-niveau en prevalentie; gebruik de schakelaar om alles te tonen.

Algehele verdeling van ernst: 1 kritiek, 6 ernstig, 22 matig, 2 gering. Per WCAG-categorie: 12 WCAG 2.0 A, 2 WCAG 2.0 AA, 1 WCAG 2.1 A, 1 WCAG 2.2 AA, 4 WCAG 2.x AAA, 5 Beste praktijk, 6 Onbepaald. Geordend op ernst, impact op belangrijke pagina's, WCAG-niveau en prevalentie. Volgens de best practices voor het rapporteren van toegankelijkheidsbugs. Downloaden: Markdown · JSON (volledig archief) · JSON (AI-diagnose) · CSV (alle bevindingen) · CSV met prioriteitspagina's · JSON met prioriteitspagina's.

Automated testing does not establish full WCAG conformance. Findings in the verification lane require manual testing before they are treated as confirmed failures.

De standaardweergave toont 12 geprioriteerd(e) probleemtype(n); 19 meer zijn beschikbaar als u overschakelt naar "Alles tonen".

3 bevinding(en) gemarkeerd als "mogelijk duplicaat" — Alfa en axe-core markeerden beide hetzelfde WCAG-succescriterium op overlappende pagina's. Als ze hetzelfde element betreffen, is het axe-core-rapport doorslaggevend. Filter de CSV op possible_duplicate_of om deze te zien. Dat twee engines dezelfde barrière markeren, verkleint de kans op een vals positief.

Findings needing review

These findings need manual verification before they can be treated as confirmed failures. Obligation remains visible for each finding.

Ernstig axe scrollable-region-focusable WCAG 2.0 A Scrollable region must have keyboard access (WCAG 2.1.1) 558/2550 pagina's · 558 gevallen Waarschijnlijk sjabloon

Bug-ID: VS-eaab37ac
Patroon-ID: VS-c613c153
Gecombineerde ID: VS-eaab37ac (patroon VS-c613c153) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: WCAG 2.0 A
Obligation: required
Handling: review
WCAG-succescriterium: 2.1.1 Keyboard (Niveau A, WCAG 2.0)
Regel: axe-core — Scrollable region must have keyboard access [scrollable-region-focusable]
Voorbeeld-URL: https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospice-all-owners/data/q4-2025
XPath / selector: .tbody-container
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<div class="tbody-container">

Beschrijving

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

Stappen om te reproduceren

Open https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospice-all-owners/data/q4-2025.
Locate the element: .tbody-container
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% van de bevolking
Limited manipulation/strength — 13.0% van de bevolking
Limited reach — 2.0% van de bevolking

Getroffen pagina's

…en meer — alle 558 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Triagestatus Notities

Kritiek axe select-name WCAG 2.0 A Select element must have an accessible name (WCAG 4.1.2) 98/2550 pagina's · 98 gevallen Waarschijnlijk sjabloon

Bug-ID: VS-b21d1758
Patroon-ID: VS-fab92378
Gecombineerde ID: VS-b21d1758 (patroon VS-fab92378) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: WCAG 2.0 A
Obligation: required
Handling: review
WCAG-succescriterium: 4.1.2 Name, Role, Value (Niveau A, WCAG 2.0)
Regel: axe-core — Select element must have an accessible name [select-name]
Voorbeeld-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
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<select name="version-select" class="form-control">

Beschrijving

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

Stappen om te reproduceren

Open https://data.cms.gov/provider-summary-by-type-of-service/medicare-physician-other-practitioners/medicare-physician-other-practitioners-by-provider/api-docs.
Locate the element: .form-control
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% van de bevolking
Limited vision — 2.4% van de bevolking
Limited manipulation/strength — 13.0% van de bevolking

Getroffen pagina's

…en meer — alle 98 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Triagestatus Notities

Ernstig axe listitem WCAG 2.0 A <li> elements must be contained in a <ul> or <ol> (WCAG 1.3.1) 9/2550 pagina's · 38 gevallen

Bug-ID: VS-b4999ba9
Patroon-ID: VS-6175596b
Gecombineerde ID: VS-b4999ba9 (patroon VS-6175596b) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: WCAG 2.0 A
Obligation: required
Handling: review
WCAG-succescriterium: 1.3.1 Info and Relationships (Niveau A, WCAG 2.0)
Regel: axe-core — <li> elements must be contained in a <ul> or <ol> [listitem]
Voorbeeld-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)
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<li class="dc-c-search-list-item ds-u-padding-top--3">

Beschrijving

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

Stappen om te reproduceren

Open https://data.cms.gov/provider-data/topics/doctors-clinicians.
Locate the element: .dc-c-search-list-item.ds-u-padding-top--3:nth-child(1)
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% van de bevolking
Limited vision — 2.4% van de bevolking
Limited cognitive, language, or learning ability — 11.0% van de bevolking

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: <li> must be inside a <ul> or <ol>.

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

Triagestatus Notities

Ernstig axe link-in-text-block WCAG 2.0 A Links must be distinguishable without relying on color (WCAG 1.4.1) 7/2550 pagina's · 69 gevallen

Bug-ID: VS-6757a930
Patroon-ID: VS-8ade3360
Gecombineerde ID: VS-6757a930 (patroon VS-8ade3360) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: WCAG 2.0 A
Obligation: required
Handling: review
WCAG-succescriterium: 1.4.1 Use of Color (Niveau A, WCAG 2.0)
Regel: axe-core — Links must be distinguishable without relying on color [link-in-text-block]
Voorbeeld-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"]
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

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

Beschrijving

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).

Stappen om te reproduceren

Open https://data.cms.gov/resources/medicare-post-acute-care-hospice-by-provider-and-service-methodology.
Locate the element: #RichTextField-fc79b0f4-e862-496b-8ce1-e7929882c6cc > p:nth-child(2) > a[target="_blank"][rel="noopener noreferrer"]
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% van de bevolking
Limited vision — 2.4% van de bevolking

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

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

Triagestatus Notities

Ernstig axe color-contrast WCAG 2.0 AA Elements must meet minimum color contrast ratio thresholds (WCAG 1.4.3) 7/2550 pagina's · 16 gevallen

Bug-ID: VS-50fa3ec2
Patroon-ID: VS-be8d563e
Gecombineerde ID: VS-50fa3ec2 (patroon VS-be8d563e) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: WCAG 2.0 AA
Obligation: required
Handling: review
WCAG-succescriterium: 1.4.3 Contrast (Minimum) (Niveau AA, WCAG 2.0)
Regel: axe-core — Elements must meet minimum color contrast ratio thresholds [color-contrast]
Voorbeeld-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
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<a class="ds-c-tooltip__trigger dkan-disabled-link" tabindex="0">

Beschrijving

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

Stappen om te reproduceren

Open https://data.cms.gov/provider-data/datasets?theme%5B0%5D=Physician+office+visit+costs.
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
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% van de bevolking
Without color perception — 4.5% van de bevolking

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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.

Drupal-tip: Check your Drupal theme's base CSS. Themes like Olivero and Bartik have contrast issues in default color schemes — override failing color pairs in your subtheme's style.css.

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

Triagestatus Notities

Ernstig axe role-img-alt WCAG 2.0 A [role="img"] elements must have alternative text (WCAG 1.1.1) 3/2550 pagina's · 6 gevallen

Bug-ID: VS-d631bd29
Patroon-ID: VS-ede1e565
Gecombineerde ID: VS-d631bd29 (patroon VS-ede1e565) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: WCAG 2.0 A
Obligation: required
Handling: review
WCAG-succescriterium: 1.1.1 Non-text Content (Niveau A, WCAG 2.0)
Regel: axe-core — [role="img"] elements must have alternative text [role-img-alt]
Voorbeeld-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
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

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

Beschrijving

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

Stappen om te reproduceren

Open https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-d-spending-by-drug.
Locate the element: canvas
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% van de bevolking
Limited vision — 2.4% van de bevolking
Limited cognitive, language, or learning ability — 11.0% van de bevolking

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Triagestatus Notities

Ernstig axe aria-command-name WCAG 2.0 A ARIA commands must have an accessible name (WCAG 4.1.2) 1/2550 pagina's · 1 gevallen Waarschijnlijk inhoud

Bug-ID: VS-e71d7143
Patroon-ID: VS-5c82bd60
Gecombineerde ID: VS-e71d7143 (patroon VS-5c82bd60) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: WCAG 2.0 A
Obligation: required
Handling: review
WCAG-succescriterium: 4.1.2 Name, Role, Value (Niveau A, WCAG 2.0)
Regel: axe-core — ARIA commands must have an accessible name [aria-command-name]
Voorbeeld-URL: https://data.cms.gov/provider-data/birthing-friendly-hospitals-and-health-systems
XPath / selector: .p-dropdown-trigger
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

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

Beschrijving

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

Stappen om te reproduceren

Open https://data.cms.gov/provider-data/birthing-friendly-hospitals-and-health-systems.
Locate the element: .p-dropdown-trigger
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% van de bevolking
Limited vision — 2.4% van de bevolking
Limited manipulation/strength — 13.0% van de bevolking

Getroffen pagina's

/provider-data/birthing-friendly-hospitals-and-health-systems

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Triagestatus Notities

Matig alfa sia-r69 WCAG 2.0 AA Text has sufficient color contrast (Enhanced) (WCAG 1.4.3) 537/2550 pagina's · 6590 gevallen Waarschijnlijk sjabloon

Bug-ID: VS-af0c0b61
Patroon-ID: VS-f7e99f4b
Gecombineerde ID: VS-af0c0b61 (patroon VS-f7e99f4b) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: WCAG 2.0 AA
Obligation: required
Handling: review
WCAG-succescriterium: 1.4.3 Contrast (Minimum) (Niveau AA, WCAG 2.0)
Regel: Siteimprove Alfa — Text has sufficient color contrast (Enhanced) [sia-r69]
Voorbeeld-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."
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

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

Stappen om te reproduceren

Open https://data.cms.gov/resources/mcbs-summary-tables-glossary.
Locate the element: text: "A federal government website managed and paid for by the U.S. Centers for Medicare & Medicaid Services."
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% van de bevolking
Without color perception — 4.5% van de bevolking

Getroffen pagina's

…en meer — alle 537 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Triagestatus Notities

Matig alfa sia-r17 WCAG 2.0 A aria-hidden element does not contain focusable elements (WCAG 4.1.2) 275/2550 pagina's · 776 gevallen Waarschijnlijk sjabloon

Bug-ID: VS-21defd12
Patroon-ID: VS-f6cf30ff
Gecombineerde ID: VS-21defd12 (patroon VS-f6cf30ff) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: WCAG 2.0 A
Obligation: required
Handling: review
WCAG-succescriterium: 4.1.2 Name, Role, Value (Niveau A, WCAG 2.0)
Regel: Siteimprove Alfa — aria-hidden element does not contain focusable elements [sia-r17]
Voorbeeld-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">
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

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

Stappen om te reproduceren

Open https://data.cms.gov/provider-data/dataset/95rg-2usp?page=4.
Locate the element: <div aria-labelledby="overview__tab" aria-hidden="true" class="ds-c-tabs__panel" id="overview">
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% van de bevolking
Limited vision — 2.4% van de bevolking
Limited manipulation/strength — 13.0% van de bevolking

Getroffen pagina's

…en meer — alle 275 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

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

Triagestatus Notities

Matig alfa sia-r8 WCAG 2.0 A Form field has accessible name (WCAG 4.1.2) 48/2550 pagina's · 48 gevallen Waarschijnlijk sjabloon

Bug-ID: VS-f0bb086f
Patroon-ID: VS-a48e6078
Gecombineerde ID: VS-f0bb086f (patroon VS-a48e6078) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: WCAG 2.0 A
Obligation: required
Handling: review
WCAG-succescriterium: 4.1.2 Name, Role, Value (Niveau A, WCAG 2.0)
Regel: Siteimprove Alfa — Form field has accessible name [sia-r8]
Voorbeeld-URL: https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs
XPath / selector: <select name="version-select" class="form-control">
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

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

Stappen om te reproduceren

Open https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs.
Locate the element: <select name="version-select" class="form-control">
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% van de bevolking
Limited vision — 2.4% van de bevolking
Limited manipulation/strength — 13.0% van de bevolking

Getroffen pagina's

…en meer — alle 48 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Associate the form field with a label.

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

Triagestatus Notities

Matig alfa sia-r113 WCAG 2.2 AA Target size is at least 24×24 CSS pixels or has spacing (Minimum) (WCAG 2.5.8) 11/2550 pagina's · 31 gevallen Waarschijnlijk sjabloon

Bug-ID: VS-3148a107
Patroon-ID: VS-179ad9b3
Gecombineerde ID: VS-3148a107 (patroon VS-179ad9b3) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: WCAG 2.2 AA
Obligation: required
Handling: review
WCAG-succescriterium: 2.5.8 Target Size (Minimum) (Niveau AA, WCAG 2.2)
Regel: Siteimprove Alfa — Target size is at least 24×24 CSS pixels or has spacing (Minimum) [sia-r113]
Voorbeeld-URL: https://data.cms.gov/resources/opt-out-affidavits-methodology
XPath / selector: <button class="selected" aria-label="card 1">
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

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).

Stappen om te reproduceren

Open https://data.cms.gov/resources/opt-out-affidavits-methodology.
Locate the element: <button class="selected" aria-label="card 1">
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% van de bevolking
Limited reach — 2.0% van de bevolking
Limited vision — 2.4% van de bevolking

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

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

Triagestatus Notities

Matig alfa sia-r68 WCAG 2.0 A Presentational children of an element are not focusable (WCAG 1.3.1) 11/2550 pagina's · 11 gevallen · mogelijk duplicaat Waarschijnlijk sjabloon

Bug-ID: VS-65df7376
Patroon-ID: VS-d6097011
Gecombineerde ID: VS-65df7376 (patroon VS-d6097011) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: WCAG 2.0 A
Obligation: required
Handling: review
WCAG-succescriterium: 1.3.1 Info and Relationships (Niveau A, WCAG 2.0)
Regel: Siteimprove Alfa — Presentational children of an element are not focusable [sia-r68]
Voorbeeld-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">
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)
Mogelijk duplicaat: Hetzelfde WCAG-succescriterium gedekt door axe-rapport VS-b4999ba9 (patroon VS-6175596b). Als axe en deze engine hetzelfde element markeren, heeft het axe-rapport voorrang — markeer dit als duplicaat in JIRA.

Beschrijving

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

Stappen om te reproduceren

Open https://data.cms.gov/cms-innovation-center-programs/cms-innovation-models-overview/innovation-center-model-summary-information.
Locate the element: <ul class="list-container__list list-container__list-right">
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% van de bevolking
Limited vision — 2.4% van de bevolking
Limited cognitive, language, or learning ability — 11.0% van de bevolking

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

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

Triagestatus Notities

Matig axe landmark-banner-is-top-level Beste praktijk Banner landmark should not be contained in another landmark (WCAG criterion undetermined) 1093/2550 pagina's · 1093 gevallen Waarschijnlijk sjabloon

Bug-ID: VS-37c9e032
Patroon-ID: VS-30db094d
Gecombineerde ID: VS-37c9e032 (patroon VS-30db094d) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: Beste praktijk
Obligation: advisory
Handling: review
WCAG-succescriterium: Best practice — geen WCAG-vereiste
Regel: axe-core — Banner landmark should not be contained in another landmark [landmark-banner-is-top-level]
Voorbeeld-URL: https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospice-all-owners/data/q4-2025
XPath / selector: .Header
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<header class="Header" style="position: sticky;">

Beschrijving

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).

Stappen om te reproduceren

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

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 1093 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Triagestatus Notities

Matig alfa sia-r111 WCAG 2.x AAA Target size is at least 44×44 CSS pixels (Enhanced) (WCAG 2.5.5) 884/2550 pagina's · 22023 gevallen Waarschijnlijk sjabloon

Bug-ID: VS-1ae5e01e
Patroon-ID: VS-cb53cc4d
Gecombineerde ID: VS-1ae5e01e (patroon VS-cb53cc4d) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: WCAG 2.x AAA
Obligation: aspirational
Handling: review
WCAG-succescriterium: 2.5.5 Target Size (Enhanced) (Niveau AAA, WCAG 2.1)
Regel: Siteimprove Alfa — Target size is at least 44×44 CSS pixels (Enhanced) [sia-r111]
Voorbeeld-URL: https://data.cms.gov/resources/mcbs-summary-tables-glossary
XPath / selector: <a href="/search" title="">
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

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).

Stappen om te reproduceren

Open https://data.cms.gov/resources/mcbs-summary-tables-glossary.
Locate the element: <a href="/search" title="">
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.

Getroffen pagina's

…en meer — alle 884 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

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

Triagestatus Notities

Matig alfa sia-r73 WCAG 2.x AAA Text has minimum contrast ratio of 4.5:1 (WCAG 1.4.8) 884/2550 pagina's · 11353 gevallen Waarschijnlijk sjabloon

Bug-ID: VS-813d6900
Patroon-ID: VS-2208081b
Gecombineerde ID: VS-813d6900 (patroon VS-2208081b) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: WCAG 2.x AAA
Obligation: aspirational
Handling: review
WCAG-succescriterium: 1.4.8 Visual Presentation (Niveau AAA, WCAG 2.0)
Regel: Siteimprove Alfa — Text has minimum contrast ratio of 4.5:1 [sia-r73]
Voorbeeld-URL: https://data.cms.gov/resources/mcbs-summary-tables-glossary
XPath / selector: <p class="usa-banner__header-text">
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

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

Stappen om te reproduceren

Open https://data.cms.gov/resources/mcbs-summary-tables-glossary.
Locate the element: <p class="usa-banner__header-text">
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.

Getroffen pagina's

…en meer — alle 884 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

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

Triagestatus Notities

Matig alfa sia-r66 WCAG 2.x AAA Text has enhanced contrast (WCAG 1.4.6) 538/2550 pagina's · 15044 gevallen Waarschijnlijk sjabloon

Bug-ID: VS-6cac155b
Patroon-ID: VS-646b1e0b
Gecombineerde ID: VS-6cac155b (patroon VS-646b1e0b) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: WCAG 2.x AAA
Obligation: aspirational
Handling: review
WCAG-succescriterium: 1.4.6 Contrast (Enhanced) (Niveau AAA, WCAG 2.0)
Regel: Siteimprove Alfa — Text has enhanced contrast [sia-r66]
Voorbeeld-URL: https://data.cms.gov/resources/mcbs-summary-tables-glossary
XPath / selector: text: "Definition"
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

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

Stappen om te reproduceren

Open https://data.cms.gov/resources/mcbs-summary-tables-glossary.
Locate the element: text: "Definition"
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.

Getroffen pagina's

…en meer — alle 538 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Increase text contrast to meet WCAG AAA (7:1).

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

Triagestatus Notities

Matig alfa sia-r87 Onbepaald First focusable element is link to main content (WCAG criterion undetermined) 538/2550 pagina's · 538 gevallen Waarschijnlijk sjabloon

Bug-ID: VS-3ca418bf
Patroon-ID: VS-aa242c2d
Gecombineerde ID: VS-3ca418bf (patroon VS-aa242c2d) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: Onbepaald
Obligation: unmapped
Handling: review
WCAG-succescriterium: onbepaald
Regel: Siteimprove Alfa — First focusable element is link to main content [sia-r87]
Voorbeeld-URL: https://data.cms.gov/resources/mcbs-summary-tables-glossary
XPath / selector: {"type":"document","children":[{"type":"type","name":"html","publicId":null,"sys
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

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

Stappen om te reproduceren

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

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 538 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

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

Triagestatus Notities

Matig axe heading-order Beste praktijk Heading levels should only increase by one (WCAG criterion undetermined) 236/2550 pagina's · 284 gevallen Waarschijnlijk sjabloon

Bug-ID: VS-32eef4c9
Patroon-ID: VS-d25f622d
Gecombineerde ID: VS-32eef4c9 (patroon VS-d25f622d) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: Beste praktijk
Obligation: advisory
Handling: review
WCAG-succescriterium: Best practice — geen WCAG-vereiste
Regel: axe-core — Heading levels should only increase by one [heading-order]
Voorbeeld-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
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<h3>Dataset Information</h3>

Beschrijving

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

Stappen om te reproduceren

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

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 236 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Use heading levels in order (h1 → h2 → h3) without skipping; structure, not size.

Drupal-tip: Drupal Views and blocks can insert headings at arbitrary levels. In the Views UI, set "Title tag" for each display. For block titles, configure the heading level in the block's layout settings.

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

Triagestatus Notities

Matig alfa sia-r18 Onbepaald aria attribute is permitted for element role (WCAG criterion undetermined) 143/2550 pagina's · 589 gevallen Waarschijnlijk sjabloon

Bug-ID: VS-eb852c30
Patroon-ID: VS-e05344b9
Gecombineerde ID: VS-eb852c30 (patroon VS-e05344b9) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: Onbepaald
Obligation: unmapped
Handling: review
WCAG-succescriterium: onbepaald
Regel: Siteimprove Alfa — aria attribute is permitted for element role [sia-r18]
Voorbeeld-URL: https://data.cms.gov/resources/mcbs-summary-tables-glossary
XPath / selector: @aria-label="Open Income and Asset Ownership"
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

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

Stappen om te reproduceren

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

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 143 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Only use ARIA states/properties that are allowed on this element/role.

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

Triagestatus Notities

Matig alfa sia-r53 Onbepaald Headings are structured hierarchically (WCAG criterion undetermined) 116/2550 pagina's · 139 gevallen Waarschijnlijk sjabloon

Bug-ID: VS-ebd64f11
Patroon-ID: VS-f054f4a4
Gecombineerde ID: VS-ebd64f11 (patroon VS-f054f4a4) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: Onbepaald
Obligation: unmapped
Handling: review
WCAG-succescriterium: onbepaald
Regel: Siteimprove Alfa — Headings are structured hierarchically [sia-r53]
Voorbeeld-URL: https://data.cms.gov/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs
XPath / selector: <h3>
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

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

Stappen om te reproduceren

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

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 116 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Use headings in a logical, non-skipping order.

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

Triagestatus Notities

Matig alfa sia-r74 WCAG 2.x AAA Link is distinguishable without relying on color (WCAG 1.4.8) 21/2550 pagina's · 21 gevallen Waarschijnlijk sjabloon

Bug-ID: VS-422376a0
Patroon-ID: VS-fbf54eba
Gecombineerde ID: VS-422376a0 (patroon VS-fbf54eba) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: WCAG 2.x AAA
Obligation: aspirational
Handling: review
WCAG-succescriterium: 1.4.8 Visual Presentation (Niveau AAA, WCAG 2.0)
Regel: Siteimprove Alfa — Link is distinguishable without relying on color [sia-r74]
Voorbeeld-URL: https://data.cms.gov/tools/medicare-part-d-prescriber-look-up-tool
XPath / selector: <p class="latestDateAvailable">
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

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

Stappen om te reproduceren

Open https://data.cms.gov/tools/medicare-part-d-prescriber-look-up-tool.
Locate the element: <p class="latestDateAvailable">
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.

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

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

Triagestatus Notities

Matig axe landmark-unique Beste praktijk Landmarks should have a unique role or role/label/title (i.e. accessible name) c (WCAG criterion undetermined) 19/2550 pagina's · 19 gevallen Waarschijnlijk sjabloon

Bug-ID: VS-8d8aa5bf
Patroon-ID: VS-8806389c
Gecombineerde ID: VS-8d8aa5bf (patroon VS-8806389c) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: Beste praktijk
Obligation: advisory
Handling: review
WCAG-succescriterium: Best practice — geen WCAG-vereiste
Regel: axe-core — Landmarks should have a unique role or role/label/title (i.e. accessible name) c [landmark-unique]
Voorbeeld-URL: https://data.cms.gov/tools/medicare-part-d-prescriber-look-up-tool
XPath / selector: .desktop
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<nav aria-label="breadcrumb" class="DatasetHero__breadcrumb desktop">

Beschrijving

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).

Stappen om te reproduceren

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

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Triagestatus Notities

Matig alfa sia-r78 Onbepaald Table header has scope (WCAG criterion undetermined) 6/2550 pagina's · 26 gevallen

Bug-ID: VS-f2673896
Patroon-ID: VS-2cd767ca
Gecombineerde ID: VS-f2673896 (patroon VS-2cd767ca) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: Onbepaald
Obligation: unmapped
Handling: review
WCAG-succescriterium: onbepaald
Regel: Siteimprove Alfa — Table header has scope [sia-r78]
Voorbeeld-URL: https://data.cms.gov/medicare-current-beneficiary-survey-mcbs
XPath / selector: <h5 class="typeface-05-h5-desktop-regular-white MoreTopicCarouselCard__count">
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

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

Stappen om te reproduceren

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

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

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

Triagestatus Notities

Matig alfa sia-r90 WCAG 2.0 A Component with same name serves same purpose (WCAG 4.1.2) 5/2550 pagina's · 8 gevallen

Bug-ID: VS-44e21898
Patroon-ID: VS-a2a3dffb
Gecombineerde ID: VS-44e21898 (patroon VS-a2a3dffb) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: WCAG 2.0 A
Obligation: required
Handling: review
WCAG-succescriterium: 4.1.2 Name, Role, Value (Niveau A, WCAG 2.0)
Regel: Siteimprove Alfa — Component with same name serves same purpose [sia-r90]
Voorbeeld-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">
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

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

Stappen om te reproduceren

Open https://data.cms.gov/medicare-current-beneficiary-survey-mcbs.
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">
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% van de bevolking
Limited vision — 2.4% van de bevolking
Limited manipulation/strength — 13.0% van de bevolking

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

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

Triagestatus Notities

Gering axe empty-table-header Beste praktijk Table header text should not be empty (WCAG criterion undetermined) 3/2550 pagina's · 5 gevallen

Bug-ID: VS-b3bd2b0f
Patroon-ID: VS-d69fc059
Gecombineerde ID: VS-b3bd2b0f (patroon VS-d69fc059) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: Beste praktijk
Obligation: advisory
Handling: review
WCAG-succescriterium: Best practice — geen WCAG-vereiste
Regel: axe-core — Table header text should not be empty [empty-table-header]
Voorbeeld-URL: https://data.cms.gov/provider-data/topics/nursing-homes/quality-measures
XPath / selector: #nb
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<th id="nb" scope="col"><span>&nbsp;</span></th>

Beschrijving

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

Stappen om te reproduceren

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

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

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

Triagestatus Notities

Matig alfa sia-r57 Onbepaald Scrolling content can be accessed by keyboard (WCAG criterion undetermined) 2/2550 pagina's · 8420 gevallen Waarschijnlijk inhoud

Bug-ID: VS-3afdf6f4
Patroon-ID: VS-c18be945
Gecombineerde ID: VS-3afdf6f4 (patroon VS-c18be945) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: Onbepaald
Obligation: unmapped
Handling: review
WCAG-succescriterium: onbepaald
Regel: Siteimprove Alfa — Scrolling content can be accessed by keyboard [sia-r57]
Voorbeeld-URL: https://data.cms.gov/tools/mapping-medicare-disparities-by-population
XPath / selector: text: "Population View"
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (16 wk)

Beschrijving

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

Stappen om te reproduceren

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

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

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

Triagestatus Notities

Matig alfa sia-r2 WCAG 2.0 A Image has accessible name (WCAG 1.1.1) 2/2550 pagina's · 5 gevallen · mogelijk duplicaat Waarschijnlijk inhoud

Bug-ID: VS-207cb39a
Patroon-ID: VS-a24eaa8c
Gecombineerde ID: VS-207cb39a (patroon VS-a24eaa8c) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: WCAG 2.0 A
Obligation: required
Handling: review
WCAG-succescriterium: 1.1.1 Non-text Content (Niveau A, WCAG 2.0)
Regel: Siteimprove Alfa — Image has accessible name [sia-r2]
Voorbeeld-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;">
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (16 wk)
Mogelijk duplicaat: Hetzelfde WCAG-succescriterium gedekt door axe-rapport VS-d631bd29 (patroon VS-ede1e565). Als axe en deze engine hetzelfde element markeren, heeft het axe-rapport voorrang — markeer dit als duplicaat in JIRA.

Beschrijving

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

Stappen om te reproduceren

Open https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-d-spending-by-drug.
Locate the element: <canvas role="img" height="500" width="768" style="display: block; box-sizing: border-box; height: 500px; width: 768px;">
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% van de bevolking
Limited vision — 2.4% van de bevolking
Limited cognitive, language, or learning ability — 11.0% van de bevolking

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Give every <img> an accessible name (alt text), or alt="" if purely decorative.

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

Triagestatus Notities

Matig alfa sia-r61 Onbepaald Form field label is visible (WCAG criterion undetermined) 2/2550 pagina's · 2 gevallen Waarschijnlijk inhoud

Bug-ID: VS-f3e270d2
Patroon-ID: VS-7118fead
Gecombineerde ID: VS-f3e270d2 (patroon VS-7118fead) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: Onbepaald
Obligation: unmapped
Handling: review
WCAG-succescriterium: onbepaald
Regel: Siteimprove Alfa — Form field label is visible [sia-r61]
Voorbeeld-URL: https://data.cms.gov/provider-data/about/contact-us
XPath / selector: {"type":"document","children":[{"type":"type","name":"html","publicId":null,"sys
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (12 wk)

Beschrijving

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

Stappen om te reproduceren

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

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

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

Triagestatus Notities

Matig alfa sia-r14 WCAG 2.1 A Accessible name of link or button matches visible label (WCAG 2.5.3) 1/2550 pagina's · 1 gevallen Waarschijnlijk inhoud

Bug-ID: VS-2f8438cd
Patroon-ID: VS-f7dba940
Gecombineerde ID: VS-2f8438cd (patroon VS-f7dba940) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: WCAG 2.1 A
Obligation: required
Handling: review
WCAG-succescriterium: 2.5.3 Label in Name (Niveau A, WCAG 2.1)
Regel: Siteimprove Alfa — Accessible name of link or button matches visible label [sia-r14]
Voorbeeld-URL: https://data.cms.gov/provider-data/birthing-friendly-hospitals-and-health-systems
XPath / selector: <a href="" tabindex="0" target="_blank" rel="noopener noreferrer">
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (13 wk)

Beschrijving

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

Stappen om te reproduceren

Open https://data.cms.gov/provider-data/birthing-friendly-hospitals-and-health-systems.
Locate the element: <a href="" tabindex="0" target="_blank" rel="noopener noreferrer">
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% van de bevolking
Without speech — 0.5% van de bevolking

Getroffen pagina's

/provider-data/birthing-friendly-hospitals-and-health-systems

Testomgeving

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

Voorgestelde oplossing

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

Triagestatus Notities

Matig alfa sia-r12 WCAG 2.0 A Button has accessible name (WCAG 4.1.2) 1/2550 pagina's · 1 gevallen · mogelijk duplicaat Waarschijnlijk inhoud

Bug-ID: VS-d42071df
Patroon-ID: VS-29f9f921
Gecombineerde ID: VS-d42071df (patroon VS-29f9f921) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: WCAG 2.0 A
Obligation: required
Handling: review
WCAG-succescriterium: 4.1.2 Name, Role, Value (Niveau A, WCAG 2.0)
Regel: Siteimprove Alfa — Button has accessible name [sia-r12]
Voorbeeld-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">
Geschiedenis: voor het eerst gezien 2026-W27, laatst gezien 2026-W40 (8 wk)
Mogelijk duplicaat: Hetzelfde WCAG-succescriterium gedekt door axe-rapport VS-e71d7143 (patroon VS-5c82bd60). Als axe en deze engine hetzelfde element markeren, heeft het axe-rapport voorrang — markeer dit als duplicaat in JIRA.

Beschrijving

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

Stappen om te reproduceren

Open https://data.cms.gov/provider-data/birthing-friendly-hospitals-and-health-systems.
Locate the element: <div class="p-dropdown-trigger" role="button" aria-haspopup="listbox" aria-expanded="false">
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% van de bevolking
Limited vision — 2.4% van de bevolking
Limited manipulation/strength — 13.0% van de bevolking

Getroffen pagina's

/provider-data/birthing-friendly-hospitals-and-health-systems

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Give the button an accessible name via text, aria-label, or aria-labelledby.

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

Triagestatus Notities

Gering axe empty-heading Beste praktijk Headings should not be empty (WCAG criterion undetermined) 1/2550 pagina's · 1 gevallen Waarschijnlijk inhoud

Bug-ID: VS-0b06172d
Patroon-ID: VS-0066c67d
Gecombineerde ID: VS-0b06172d (patroon VS-0066c67d) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: Beste praktijk
Obligation: advisory
Handling: review
WCAG-succescriterium: Best practice — geen WCAG-vereiste
Regel: axe-core — Headings should not be empty [empty-heading]
Voorbeeld-URL: https://data.cms.gov/provider-data/dataset/pudb-wetr?page=99
XPath / selector: h1
Geschiedenis: voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (15 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<h1 class="ds-text-heading--3xl"></h1>

Beschrijving

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

Stappen om te reproduceren

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

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

/provider-data/dataset/pudb-wetr

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Triagestatus Notities

Bevindingen van Deque axe-core

Rule-level axe-core summary (12 rule type(s))

Each failing rule links out to the axe-core documentation. For full element-level detail including HTML snippets and XPaths, see the bug reports above.

axe-core rules failing in 2026-W40, by pages affected
Regel	Impact	Getroffen pagina's	Gevallen	Voorbeeldpagina's	Alle getroffen
Banner landmark should not be contained in another landmark [landmark-banner-is-top-level]	moderate	1093	1093	/provider-characteristics/hospitals-and-other-facilities/hospice-all-owners/data/q4-2025 /resources/mcbs-summary-tables-glossary /medicare-current-beneficiary-survey-mcbs/income-and-asset-ownership/data	alle 1093 pagina's (CSV)
Scrollable region must have keyboard access [scrollable-region-focusable]	serious	558	558	/provider-characteristics/hospitals-and-other-facilities/hospice-all-owners/data/q4-2025 /medicare-current-beneficiary-survey-mcbs/income-and-asset-ownership/data /provider-characteristics/medicare-provider-supplier-enrollment/fiscal-intermediary-shared-system-attending-and-rendering/data/july-31-2026	alle 558 pagina's (CSV)
Heading levels should only increase by one [heading-order]	moderate	236	284	/provider-summary-by-type-of-service/medicare-physician-other-practitioners/medicare-physician-other-practitioners-by-provider/api-docs /provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs /summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-telehealth-trends/api-docs	alle 236 pagina's (CSV)
Select element must have an accessible name [select-name]	critical	98	98	/provider-summary-by-type-of-service/medicare-physician-other-practitioners/medicare-physician-other-practitioners-by-provider/api-docs /provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs /summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-telehealth-trends/api-docs	alle 98 pagina's (CSV)
Landmarks should have a unique role or role/label/title (i.e. accessible name) combination [landmark-unique]	moderate	19	19	/tools/medicare-part-d-prescriber-look-up-tool /tools/medicare-part-d-drug-spending-dashboard /tools/provider-opt-out-affidavits-look-up-tool	alle 19 pagina's (CSV)
<li> elements must be contained in a <ul> or <ol> [listitem]	serious	9	38	/provider-data/topics/doctors-clinicians /provider-data/topics/long-term-care-hospitals /provider-data/topics/physician-office-visit-costs	alle 9 pagina's (CSV)
Links must be distinguishable without relying on color [link-in-text-block]	serious	7	69	/resources/medicare-post-acute-care-hospice-by-provider-and-service-methodology /resources/esrd-facility-aggregation-group-performance-data-dictionary /about	alle 7 pagina's (CSV)
Elements must meet minimum color contrast ratio thresholds [color-contrast]	serious	7	16	/provider-data/datasets /provider-data/datasets /provider-data/datasets	alle 7 pagina's (CSV)
[role="img"] elements must have alternative text [role-img-alt]	serious	3	6	/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-d-spending-by-drug /beta/provider-characteristics/medicare-provider-supplier-enrollment/medicare-provider-and-supplier-taxonomy-crosswalk /summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-b-spending-by-drug	alle 3 pagina's (CSV)
Table header text should not be empty [empty-table-header]	minor	3	5	/provider-data/topics/nursing-homes/quality-measures /provider-data/topics/home-health-services/measuring-agency-performance /resources/geographic-variation-methodology-2018	alle 3 pagina's (CSV)
Headings should not be empty [empty-heading]	minor	1	1	/provider-data/dataset/pudb-wetr	alle 1 pagina's (CSV)
ARIA commands must have an accessible name [aria-command-name]	serious	1	1	/provider-data/birthing-friendly-hospitals-and-health-systems	alle 1 pagina's (CSV)

Bevindingen van Siteimprove Alfa

Rule-level Alfa summary (19 rule type(s))

Rule-level summary from Siteimprove Alfa (W3C ACT-based). Findings that overlap with axe-core on the same WCAG success criterion are noted as possible duplicates in the bug reports above.

Alfa rules failing in 2026-W40, by pages affected
Regel	Impact	Getroffen pagina's	Gevallen	Voorbeeldpagina's	Alle getroffen
Target size is at least 44×44 CSS pixels (Enhanced) [sia-r111]	n.v.t.	884	22023	/resources/mcbs-summary-tables-glossary /medicare-current-beneficiary-survey-mcbs/income-and-asset-ownership/data /provider-data/dataset/95rg-2usp	alle 884 pagina's (CSV)
Text has minimum contrast ratio of 4.5:1 [sia-r73]	n.v.t.	884	11353	/resources/mcbs-summary-tables-glossary /medicare-current-beneficiary-survey-mcbs/income-and-asset-ownership/data /provider-data/dataset/95rg-2usp	alle 884 pagina's (CSV)
Text has enhanced contrast [sia-r66]	n.v.t.	538	15044	/resources/mcbs-summary-tables-glossary /medicare-current-beneficiary-survey-mcbs/income-and-asset-ownership/data /provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs	alle 538 pagina's (CSV)
First focusable element is link to main content [sia-r87]	n.v.t.	538	538	/resources/mcbs-summary-tables-glossary /medicare-current-beneficiary-survey-mcbs/income-and-asset-ownership/data /provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs	alle 538 pagina's (CSV)
Text has sufficient color contrast (Enhanced) [sia-r69]	n.v.t.	537	6590	/resources/mcbs-summary-tables-glossary /medicare-current-beneficiary-survey-mcbs/income-and-asset-ownership/data /provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs	alle 537 pagina's (CSV)
aria-hidden element does not contain focusable elements [sia-r17]	n.v.t.	275	776	/provider-data/dataset/95rg-2usp /provider-data/dataset/medrec /provider-data/dataset/ijh5-nb2v	alle 275 pagina's (CSV)
aria attribute is permitted for element role [sia-r18]	n.v.t.	143	589	/resources/mcbs-summary-tables-glossary /resources/public-reporting-of-missing-digital-contact-information-data-dictionary /provider-summary-by-type-of-service/medicare-inpatient-hospitals/medicare-inpatient-hospitals-by-provider	alle 143 pagina's (CSV)
Headings are structured hierarchically [sia-r53]	n.v.t.	116	139	/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs /summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-telehealth-trends/api-docs /resources/medicare-service-type-reports-methodology	alle 116 pagina's (CSV)
Form field has accessible name [sia-r8]	n.v.t.	48	48	/provider-characteristics/hospitals-and-other-facilities/hospital-enrollments/api-docs /summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-telehealth-trends/api-docs /provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-supplier/api-docs	alle 48 pagina's (CSV)
Link is distinguishable without relying on color [sia-r74]	n.v.t.	21	21	/tools/medicare-part-d-prescriber-look-up-tool /tools/provider-opt-out-affidavits-look-up-tool /tools/medicaid-managed-care-dashboard	alle 21 pagina's (CSV)
Target size is at least 24×24 CSS pixels or has spacing (Minimum) [sia-r113]	n.v.t.	11	31	/resources/opt-out-affidavits-methodology /resources/acos-aco-participants-and-snf-affiliates-methodology /provider-characteristics	alle 11 pagina's (CSV)
Presentational children of an element are not focusable [sia-r68]	n.v.t.	11	11	/cms-innovation-center-programs/cms-innovation-models-overview/innovation-center-model-summary-information /summary-statistics-on-beneficiary-enrollment/health-insurance-marketplace/health-insurance-exchanges-monthly-effectuated-enrollment /cms-innovation-center-programs/disease-episode-based-payment-models/medicare-alternative-payment-model-adoption	alle 11 pagina's (CSV)
Table header has scope [sia-r78]	n.v.t.	6	26	/medicare-current-beneficiary-survey-mcbs /provider-characteristics /beta/provider-characteristics/medicare-provider-supplier-enrollment/medicare-provider-and-supplier-taxonomy-crosswalk	alle 6 pagina's (CSV)
Component with same name serves same purpose [sia-r90]	n.v.t.	5	8	/medicare-current-beneficiary-survey-mcbs /provider-characteristics /summary-statistics-on-provider-enrollment	alle 5 pagina's (CSV)
Scrolling content can be accessed by keyboard [sia-r57]	n.v.t.	2	8420	/tools/mapping-medicare-disparities-by-population /tools/mapping-medicare-disparities-by-hospital	alle 2 pagina's (CSV)
Image has accessible name [sia-r2]	n.v.t.	2	5	/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-d-spending-by-drug /beta/provider-characteristics/medicare-provider-supplier-enrollment/medicare-provider-and-supplier-taxonomy-crosswalk	alle 2 pagina's (CSV)
Form field label is visible [sia-r61]	n.v.t.	2	2	/provider-data/about/contact-us /provider-data/about/faq	alle 2 pagina's (CSV)
Button has accessible name [sia-r12]	n.v.t.	1	1	/provider-data/birthing-friendly-hospitals-and-health-systems	alle 1 pagina's (CSV)
Accessible name of link or button matches visible label [sia-r14]	n.v.t.	1	1	/provider-data/birthing-friendly-hospitals-and-health-systems	alle 1 pagina's (CSV)

Unieke toegankelijkheidsproblemen (axe + Alfa samengevoegd)

axe en Alfa implementeren beide de W3C ACT-regels, dus hetzelfde probleem wordt vaak door beide gevonden. Deze worden ontdubbeld per ACT-regel en pagina, dus een gedeelde bevinding telt één keer (6060 ruwe enginebevindingen → 6009 uniek).

Unieke problemen (regel × pagina): 6009
Door beide engines gevonden: 51 hoogste betrouwbaarheid
Alleen axe: 1984
Alleen Alfa: 3974

3 regeltype(n) door beide engines gevonden — hoogste betrouwbaarheid

Twee onafhankelijke implementaties van ACT-regels (Deque axe-core en Siteimprove Alfa) markeerden hetzelfde probleem op dezelfde pagina's. Overeenstemming tussen afzonderlijke engines is sterk bewijs dat de barrière echt is en geen vals positief van één tool — de beste plek om te beginnen.

Regels die in 2026-W40 door zowel axe-core als Alfa zijn gemarkeerd, op getroffen pagina's.
Probleem	Pagina's	Regelverwijzingen
Select element must have an accessible name	98	axe select-name · Alfa sia-r8 · ACT e086e5
[role="img"] elements must have alternative text	3	axe role-img-alt · Alfa sia-r2 · ACT 23a2a8
ARIA commands must have an accessible name	1	axe aria-command-name · Alfa sia-r12 · ACT 97a4e1