CMS — Centers for Medicare & Medicaid Services · Rate Limits

Cms Gov Rate Limits

Rate limit policies across CMS APIs. The Blue Button 2.0 API is the only CMS API that publishes a per-application rate limit. BCDA, AB2D, and DPC throttle by concurrent in-flight bulk export jobs rather than per-request limits. The Marketplace API and data.cms.gov apply best-effort fair-use throttling without published numbers.

Cms Gov Rate Limits is the rate-limit profile for CMS — Centers for Medicare & Medicaid Services on the APIs.io network.

The provider publishes no rate limits that could be read; the profile records that absence rather than inventing a ceiling.

The profile also includes 6 backoff/retry policies defined.

Tagged areas include Healthcare, Medicare, Medicaid, FHIR, and Bulk Data.

0 Limits
Method: generated, dated 2026-05-25.
Written by API Evangelist on 2026-05-25 and not verified against a page the provider published. Treat every limit as unconfirmed until a dated transcription replaces it.
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Limits

CMS — Centers for Medicare & Medicaid Services publishes no rate limits that could be read; the profile records that absence rather than inventing a ceiling.
HealthcareMedicareMedicaidFHIRBulk DataOpen DataGovernmentFederalClaimsInsuranceACAMarketplaceQualityHealth InsuranceFederal GovernmentDrug SpendingProvider DataQuality MeasuresClaims DataGovernment Data

Policies

Blue Button 2.0 per-application throttling on the production FHIR R4 endpoint.
BCDA throttles by concurrent jobs per ACO, not by request rate.
AB2D throttles by concurrent jobs per contract.
DPC sandbox and production both throttle bulk jobs per organization.
Marketplace API applies fair-use throttling; specific numbers are not published.
data.cms.gov data-api applies best-effort throttling.

Work with this as data

Every rate limit here is available over the APIs.io API and to AI agents over MCP.

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Tools for rate limits

4 MCP tools reach this
  • find_rate_limitsBrowse and filter every rate limit in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This rate limit 
curl "https://apis.io/api/v1/rate-limits/cms-gov-rate-limits"
All rate limits 
curl "https://apis.io/api/v1/rate-limits?limit=25"

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