Centers for Medicare and Medicaid Services website screenshot

Centers for Medicare and Medicaid Services

The Centers for Medicare and Medicaid Services (CMS) provides a suite of public REST APIs enabling developers to access Medicare provider data, quality measures, drug spending, health plan finder, beneficiary claims, and public health insurance datasets. CMS APIs support interoperability standards including HL7 FHIR and OAuth 2.0 to power healthcare applications across the US health system.

Centers for Medicare and Medicaid Services publishes 17 APIs on the APIs.io network, including CMS Beneficiary Claims Data API (BCDA), CMS AB2D API (Claims Data to Part D Sponsors), API Reference API, and 14 more. Tagged areas include Medicare, Medicaid, Healthcare, Health Insurance, and FHIR.

The Centers for Medicare and Medicaid Services catalog on APIs.io includes 2 JSON-LD contexts and 1 Spectral governance ruleset.

Centers for Medicare and Medicaid Services’ developer surface includes authentication, developer portal, changelog, sandbox, CLI, code examples, documentation, and 69 more developer resources.

85.7/100 exemplar ▬ flat Agent 43/100 agent ready Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0
AccessFreeOpen⚡ Free to try
26 APIs 1 MCP Servers
MedicareMedicaidHealthcareHealth InsuranceFHIRFederal-GovernmentDrug SpendingProvider DataQuality MeasuresClaims Data

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0
Composite quality — 85.7/100 · exemplar
Contract Quality 13.2 / 21
Developer Ergonomics 14.1 / 17
Access Clarity 15.2 / 17
Operational Transparency 9.3 / 11
Contract Governance 5.6 / 10
Discoverability 7.1 / 9
Regulatory Posture 12.6 / 15
Agent readiness — 43/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 5 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Regulatory Posture applies to this provider. Its tags matched the Health regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/cms: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 26

Individual APIs this provider publishes, each with its own machine-readable definition.

CMS Beneficiary Claims Data API (BCDA)

Enables Medicare Accountable Care Organizations (ACOs) and alternative payment model participants to retrieve Medicare Part A, B, and D claims data for their attributed enrollee...

CMS AB2D API (Claims Data to Part D Sponsors)

Enables stand-alone Medicare Part D Prescription Drug Plan sponsors to retrieve bulk Medicare Part A and B claims data for their active beneficiaries using the FHIR standard in ...

CMS Data at the Point of Care (DPC) API

Provides Original Medicare claims data to fee-for-service Medicare providers in a structured, standardized FHIR format at the point of care. Helps providers gain complete views ...

CMS Finder API

The API behind Finder.Healthcare.gov that helps users find private health plans available outside the Health Insurance Marketplace. Supports individual plan lookups, small group...

CMS Quality Payment Program (QPP) Submissions API

Enables QPP participants to submit quality performance data and receive real-time performance scoring feedback. Supports Merit-based Incentive Payment System (MIPS) and Advanced...

Centers for Medicare and Medicaid Services API Reference API

Information about the state of Marketplace API.

Centers for Medicare and Medicaid Services Bulk Data API

Information about the bulk data json files maintained by Marketplace API.

Centers for Medicare and Medicaid Services Code Search API

Search CPT/HCPCS codes by procedure codes or terms describing medical procedures. Get code details for a given procedure code.

Centers for Medicare and Medicaid Services Cost Search API

For a given procedure code or entire set of codes, get national averages for the amount Medicare pays hospitals or surgical centers, and the national average copay amounts.

Centers for Medicare and Medicaid Services Enrollments API

Enrollment grouping validation and information.

Centers for Medicare and Medicaid Services Geography API

Geographic data, including information on states, counties, and zipcodes.

Centers for Medicare and Medicaid Services Households & Eligibility API

Household specific calculations, including eligibility information, out of pocket costs, poverty levels, and cost benchmarks.

Centers for Medicare and Medicaid Services Insurance Issuers API

Data related to health insurance issuers on the marketplace.

Centers for Medicare and Medicaid Services Insurance Plans API

Data on both health and dental insurance plans.

Centers for Medicare and Medicaid Services Plans API

The Plans API from Centers for Medicare and Medicaid Services — 1 operation(s) for plans.

Centers for Medicare and Medicaid Services Provider & Drug Coverage API

Lookup information on providers, drugs, and what is covered under what plans.

CMS Socrata Open Data API (data.cms.gov)

data.cms.gov hosts hundreds of CMS datasets including Medicare Fee-for-Service utilization and payment data, Provider of Services files, Medicare Part B/D Prescriber summaries, ...

CMS Provider Data Catalog API (Care Compare)

The Provider Data Catalog API (formerly Hospital Compare) exposes the Medicare.gov Care Compare datasets including Hospital, Nursing Home, Home Health, Hospice, Physician, Long-...

NPPES NPI Registry API

The NPPES NPI Registry API provides free public access to look up active National Provider Identifier records for individual and organizational healthcare providers, supporting ...

Healthcare.gov Marketplace API

The Healthcare.gov Marketplace API and accompanying Open Data Plan Finder exposes Qualified Health Plan (QHP) details, plan attributes, provider networks, and formularies for th...

CMS Quality Payment Program (QPP) Measures API

The Quality Payment Program Measures Data repository and REST API publish machine-readable specifications of MIPS quality, promoting interoperability, improvement activities, an...

Medicare Coverage Database (MCD) API

The Medicare Coverage Database publishes National Coverage Determinations (NCDs), Local Coverage Determinations (LCDs), articles, and coding guidance used to determine Medicare ...

Centers for Medicare and Medicaid Services Capability API

FHIR server capability statements and metadata.

Centers for Medicare and Medicaid Services ExplanationOfBenefit API

Medicare claims expressed as ExplanationOfBenefit resources.

Scroll for all 26

Open Collections 17

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

CMS Blue Button 2.0 API

OPEN COLLECTION

Scroll for all 17

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Pricing Plans 2

Published pricing tiers and plan structures.

Cms Plans Pricing

3 plans

PLANS

Plans

4 plans

PLANS

Rate Limits 2

Documented rate limits and quota policies.

Cms Rate Limits

4 limits

RATE LIMITS

Rate Limits

0 limits

RATE LIMITS

FinOps 2

Cost, billing, and metering signals for API financial operations.

Cms Finops

FINOPS

Finops

FINOPS

Semantic Vocabularies 2

JSON-LD contexts and semantic vocabularies used across these APIs.

Cms Apis Context

0 classes · 0 properties

JSON-LD

Cms Context

150 classes · 88 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Centers for Medicare and Medicaid Services API Rules

5 rules · 4 warnings 1 info

SPECTRAL

JSON Schema 93

Standalone JSON Schema definitions for this provider's data models.

Address

6 properties

JSON SCHEMA

ApplicationError400

4 properties

JSON SCHEMA

ApplicationError404

4 properties

JSON SCHEMA

APT

2 properties

JSON SCHEMA

APTC

3 properties

JSON SCHEMA

APTCAllocationResult

2 properties

JSON SCHEMA

APTCEnrollee

2 properties

JSON SCHEMA

APTCEnrollmentGroup

4 properties

JSON SCHEMA

APTTier

2 properties

JSON SCHEMA

Benefit

8 properties

JSON SCHEMA

CertificationStatus

0 properties

JSON SCHEMA

CostSharing

7 properties

JSON SCHEMA

CostSharingReductionEnum

0 properties

JSON SCHEMA

County

3 properties

JSON SCHEMA

CountyZips

3 properties

JSON SCHEMA

Coverage

0 properties

JSON SCHEMA

Crosswalk

3 properties

JSON SCHEMA

CrosswalkCode

2 properties

JSON SCHEMA

CrosswalkData

7 properties

JSON SCHEMA

CSREligibilityEnum

0 properties

JSON SCHEMA

CSRRequestEnum

0 properties

JSON SCHEMA

CurrentEnrollment

3 properties

JSON SCHEMA

DataVersion

2 properties

JSON SCHEMA

DecileEnum

0 properties

JSON SCHEMA

DecileMapping

3 properties

JSON SCHEMA

DecileUtilizationAgeMap

7 properties

JSON SCHEMA

DecileUtilizationMapping

2 properties

JSON SCHEMA

Deductible

8 properties

JSON SCHEMA

DesignTypeEnum

0 properties

JSON SCHEMA

DiseaseMgmtProgramsEnum

0 properties

JSON SCHEMA

Drug

8 properties

JSON SCHEMA

DrugCoverage

4 properties

JSON SCHEMA

Eligibility

4 properties

JSON SCHEMA

Enrollee

2 properties

JSON SCHEMA

Enrollment

2 properties

JSON SCHEMA

EnrollmentGroup

3 properties

JSON SCHEMA

ExtendedEnrollee

13 properties

JSON SCHEMA

ExtendedEnrollment

6 properties

JSON SCHEMA

FamilyCostEnum

0 properties

JSON SCHEMA

FlattenedEnrollmentGroup

8 properties

JSON SCHEMA

GenderEnum

0 properties

JSON SCHEMA

Guideline

2 properties

JSON SCHEMA

Household

5 properties

JSON SCHEMA

HRA

0 properties

JSON SCHEMA

ICHRAResponse

2 properties

JSON SCHEMA

InsuranceMarketEnum

0 properties

JSON SCHEMA

Issuer

8 properties

JSON SCHEMA

LowestCostPlanHousehold

2 properties

JSON SCHEMA

LowestCostPlanPerson

2 properties

JSON SCHEMA

LowestCostPlanResponse

4 properties

JSON SCHEMA

LowIncomeChild

3 properties

JSON SCHEMA

MarketEnum

0 properties

JSON SCHEMA

MarketplaceModelEnum

0 properties

JSON SCHEMA

MarketYear

0 properties

JSON SCHEMA

MarketYears

2 properties

JSON SCHEMA

MetalDesignType

2 properties

JSON SCHEMA

MetalLevelEnum

0 properties

JSON SCHEMA

MOOP

8 properties

JSON SCHEMA

NearbyProvider

3 properties

JSON SCHEMA

NetworkTierEnum

0 properties

JSON SCHEMA

NPI

0 properties

JSON SCHEMA

Person

14 properties

JSON SCHEMA

Place

3 properties

JSON SCHEMA

Plan

39 properties

JSON SCHEMA

PlanID

0 properties

JSON SCHEMA

PlanIDList

0 properties

JSON SCHEMA

PlanSearchFilter

22 properties

JSON SCHEMA

PlanSearchRequest

12 properties

JSON SCHEMA

PlanTypeEnum

0 properties

JSON SCHEMA

PovertyGuideline

2 properties

JSON SCHEMA

ProductDivisionEnum

0 properties

JSON SCHEMA

Provider

9 properties

JSON SCHEMA

ProviderCoverage

5 properties

JSON SCHEMA

ProviderGenderEnum

0 properties

JSON SCHEMA

ProviderTypeEnum

0 properties

JSON SCHEMA

QualityRating

10 properties

JSON SCHEMA

Range

2 properties

JSON SCHEMA

RateArea

2 properties

JSON SCHEMA

RateAreaCounty

2 properties

JSON SCHEMA

Relationship

0 properties

JSON SCHEMA

RelationshipEdge

3 properties

JSON SCHEMA

RxCUI

0 properties

JSON SCHEMA

SBCScenario

4 properties

JSON SCHEMA

State

12 properties

JSON SCHEMA

StateCounty

2 properties

JSON SCHEMA

StateMedicaid

12 properties

JSON SCHEMA

StateMedicaidList

3 properties

JSON SCHEMA

StateRateArea

2 properties

JSON SCHEMA

SuppressionStatus

0 properties

JSON SCHEMA

UtilizationEnum

0 properties

JSON SCHEMA

ZIPCounty

4 properties

JSON SCHEMA

Code

3 properties

JSON SCHEMA

Cost

4 properties

JSON SCHEMA

Scroll for all 93

Examples 10

Example request and response payloads for these APIs.

Marketplace Drug Example

3 fields

EXAMPLE

Marketplace Plan Example

3 fields

EXAMPLE

Ppl Code Example

3 fields

EXAMPLE

Ppl Cost Example

3 fields

EXAMPLE

Scroll for all 10

Security Posture 4

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Cms Authentication

apiKey/http (bearer)/http (basic)/oauth2 · 9 schemes

SECURITY

Cms Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Cms Vulnerability Disclosure

disclosure policy published

SECURITY

Cms Trust Center

trust center published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Cms Scopes

6 scopes · authorizationCode

6 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Cms Agentic Access

94 operations · 21 acting · 1 human-in-the-loop

94 operations · 21 acting

AGENTIC

Resources

Get Started 6

Portal, sign-up, and the first successful call

Documentation 8

Reference material describing how the API behaves

Scroll for all 8

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 10

Pagination, idempotency, versioning, errors, and events

Scroll for all 10

Build 11

SDKs, sample code, and the tooling you integrate with

Scroll for all 11

Access & Security 8

Authentication, authorization, and security posture

Scroll for all 8

Operate 7

Status, limits, changes, and where to get help

Scroll for all 7

Commercial 5

Pricing, plans, and the legal terms of use

Company 1

The organization behind the API

Other 15

Properties that don't map to a standard resource type

Scroll for all 15

Source (apis.yml)

apis.yml Raw ↑
aid: cms
name: Centers for Medicare and Medicaid Services
description: The Centers for Medicare and Medicaid Services (CMS) provides a suite of public REST APIs enabling developers
  to access Medicare provider data, quality measures, drug spending, health plan finder, beneficiary claims, and public health
  insurance datasets. CMS APIs support interoperability standards including HL7 FHIR and OAuth 2.0 to power healthcare applications
  across the US health system.
type: Index
accessModel:
  pricing: free
  onboarding: open
  trial: false
  try_now: true
  public: true
  label: Free · Open access
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/cms.png
url: https://raw.githubusercontent.com/api-evangelist/cms/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-08-15'
specificationVersion: '0.23'
tags:
- Medicare
- Medicaid
- Healthcare
- Health Insurance
- FHIR
- Federal-Government
- Drug Spending
- Provider Data
- Quality Measures
- Claims Data
tags_raw:
- Medicare
- Medicaid
- Healthcare
- Health Insurance
- FHIR
- Federal Government
- Drug Spending
- Provider Data
- Quality Measures
- Claims Data
apis:
- name: CMS Beneficiary Claims Data API (BCDA)
  description: Enables Medicare Accountable Care Organizations (ACOs) and alternative payment model participants to retrieve
    Medicare Part A, B, and D claims data for their attributed enrollees. Implements the HL7 Bulk FHIR Implementation Guide
    and delivers NDJSON formatted claims data updated at least weekly.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://bcda.cms.gov/
  baseURL: https://bcda.cms.gov
  tags:
  - Medicare
  - ACO
  - Claims Data
  - FHIR
  - Bulk Data
  - Part A
  - Part B
  - Part D
  properties:
  - type: OpenAPI
    url: openapi/cms-bcda-openapi.yml
  - type: Overlay
    url: overlays/cms-bcda-overlay.yaml
  - type: AgentSkill
    url: skills/cms-export-aco-claims-bcda.md
  - type: Documentation
    url: https://bcda.cms.gov/api-documentation.html
  - type: ChangeLog
    url: https://bcda.cms.gov/announcements.html
  - type: Deprecation
    url: https://bcda.cms.gov/v3/welcome-v3
  - type: Sandbox
    url: https://sandbox.bcda.cms.gov
  - type: GitHubRepository
    url: https://github.com/CMSgov/bcda-app
  contact:
  - FN: BCDA Developer Community
    url: https://groups.google.com/g/bc-api
- name: CMS AB2D API (Claims Data to Part D Sponsors)
  description: Enables stand-alone Medicare Part D Prescription Drug Plan sponsors to retrieve bulk Medicare Part A and B
    claims data for their active beneficiaries using the FHIR standard in NDJSON format. Authenticates via Okta-based OAuth
    2.0 bearer tokens.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://ab2d.cms.gov/
  baseURL: https://api.ab2d.cms.gov
  tags:
  - Medicare
  - Part D
  - Claims Data
  - FHIR
  - Bulk Data
  - Prescription Drug Plans
  properties:
  - type: OpenAPI
    url: openapi/cms-ab2d-openapi.yml
  - type: Overlay
    url: overlays/cms-ab2d-overlay.yaml
  - type: AgentSkill
    url: skills/cms-export-partd-claims-ab2d.md
  - type: Documentation
    url: https://ab2d.cms.gov/api-documentation
  - type: APIReference
    url: https://sandbox.ab2d.cms.gov/swagger-ui/index.html
  - type: StatusPage
    url: https://ab2d.cms.gov/status
  - type: Sandbox
    url: https://sandbox.ab2d.cms.gov
  - type: GitHubRepository
    url: https://github.com/CMSgov/ab2d
  - type: Support
    url: https://groups.google.com/u/0/g/cms-ab2d-api
  - type: AdvancedGuide
    url: https://ab2d.cms.gov/advanced-user-guide.html
- name: CMS Data at the Point of Care (DPC) API
  description: Provides Original Medicare claims data to fee-for-service Medicare providers in a structured, standardized
    FHIR format at the point of care. Helps providers gain complete views of patient medical histories to improve care coordination
    and reduce redundant testing.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://dpc.cms.gov/
  baseURL: https://sandbox.dpc.cms.gov
  tags:
  - Medicare
  - FHIR
  - Provider
  - Point of Care
  - Claims Data
  - Care Coordination
  properties:
  - type: CapabilityStatement
    url: conformance/cms-dpc-capabilitystatement.json
  - type: Documentation
    url: https://dpc.cms.gov/docsV1
  - type: Sandbox
    url: https://sandbox.dpc.cms.gov
  - type: GitHubRepository
    url: https://github.com/CMSgov/dpc-app
  contact:
  - FN: DPC API Developer Group
    url: https://groups.google.com/d/forum/dpc-api
- name: CMS Finder API
  description: The API behind Finder.Healthcare.gov that helps users find private health plans available outside the Health
    Insurance Marketplace. Supports individual plan lookups, small group plan searches, and geographic lookups by ZIP code.
    Rate limited to 1000 requests per minute.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developer.cms.gov/finder-api/
  baseURL: https://finder.healthcare.gov
  tags:
  - Health Insurance
  - Plan Finder
  - Individual Plans
  - Small Group Plans
  - Healthcare.gov
  properties:
  - type: Documentation
    url: https://finder.healthcare.gov/#services
  - type: Authentication
    url: https://developer.cms.gov/finder-api/key-request.html
- name: CMS Quality Payment Program (QPP) Submissions API
  description: Enables QPP participants to submit quality performance data and receive real-time performance scoring feedback.
    Supports Merit-based Incentive Payment System (MIPS) and Advanced Alternative Payment Model (APM) data submissions for
    Medicare quality reporting.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://cmsgov.github.io/qpp-submissions-docs/
  baseURL: https://qpp.cms.gov/api/submissions
  tags:
  - Quality Payment Program
  - QPP
  - MIPS
  - APM
  - Medicare Quality
  - Performance Scoring
  properties:
  - type: Documentation
    url: https://cmsgov.github.io/qpp-submissions-docs/
- aid: cms:cms-api-reference-api
  name: Centers for Medicare and Medicaid Services API Reference API
  description: Information about the state of Marketplace API.
  humanURL: https://developer.cms.gov/marketplace-api/
  baseURL: https://marketplace.api.healthcare.gov/api/v1
  tags:
  - API Reference
  properties:
  - type: OpenAPI
    url: openapi/cms-api-reference-api-openapi.yml
  - type: Documentation
    url: https://developer.cms.gov/marketplace-api/
  - type: Authentication
    url: https://developer.cms.gov/marketplace-api/key-request.html
  - type: Documentation
    url: https://bluebutton.cms.gov/api-documentation
  - type: Sandbox
    url: https://sandbox.bluebutton.cms.gov/v1/accounts/login
  - type: GitHubRepository
    url: https://github.com/CMSgov/bluebutton-web-server
  - type: Documentation
    url: https://developer.cms.gov/ppl-api/
- aid: cms:cms-bulk-data-api
  name: Centers for Medicare and Medicaid Services Bulk Data API
  description: Information about the bulk data json files maintained by Marketplace API.
  humanURL: https://developer.cms.gov/marketplace-api/
  baseURL: https://marketplace.api.healthcare.gov/api/v1
  tags:
  - Bulk Data
  properties:
  - type: OpenAPI
    url: openapi/cms-bulk-data-api-openapi.yml
  - type: Documentation
    url: https://developer.cms.gov/marketplace-api/
  - type: Authentication
    url: https://developer.cms.gov/marketplace-api/key-request.html
  - type: Documentation
    url: https://bluebutton.cms.gov/api-documentation
  - type: Sandbox
    url: https://sandbox.bluebutton.cms.gov/v1/accounts/login
  - type: GitHubRepository
    url: https://github.com/CMSgov/bluebutton-web-server
  - type: Documentation
    url: https://developer.cms.gov/ppl-api/
- aid: cms:cms-code-search-api
  name: Centers for Medicare and Medicaid Services Code Search API
  description: Search CPT/HCPCS codes by procedure codes or terms describing medical procedures. Get code details for a given
    procedure code.
  humanURL: https://developer.cms.gov/marketplace-api/
  baseURL: https://marketplace.api.healthcare.gov/api/v1
  tags:
  - Code Search
  properties:
  - type: OpenAPI
    url: openapi/cms-code-search-api-openapi.yml
  - type: Documentation
    url: https://developer.cms.gov/marketplace-api/
  - type: Authentication
    url: https://developer.cms.gov/marketplace-api/key-request.html
  - type: Documentation
    url: https://bluebutton.cms.gov/api-documentation
  - type: Sandbox
    url: https://sandbox.bluebutton.cms.gov/v1/accounts/login
  - type: GitHubRepository
    url: https://github.com/CMSgov/bluebutton-web-server
  - type: Documentation
    url: https://developer.cms.gov/ppl-api/
- aid: cms:cms-cost-search-api
  name: Centers for Medicare and Medicaid Services Cost Search API
  description: For a given procedure code or entire set of codes, get national averages for the amount Medicare pays hospitals
    or surgical centers, and the national average copay amounts.
  humanURL: https://developer.cms.gov/marketplace-api/
  baseURL: https://marketplace.api.healthcare.gov/api/v1
  tags:
  - Cost Search
  properties:
  - type: OpenAPI
    url: openapi/cms-cost-search-api-openapi.yml
  - type: Documentation
    url: https://developer.cms.gov/marketplace-api/
  - type: Authentication
    url: https://developer.cms.gov/marketplace-api/key-request.html
  - type: Documentation
    url: https://bluebutton.cms.gov/api-documentation
  - type: Sandbox
    url: https://sandbox.bluebutton.cms.gov/v1/accounts/login
  - type: GitHubRepository
    url: https://github.com/CMSgov/bluebutton-web-server
  - type: Documentation
    url: https://developer.cms.gov/ppl-api/
- aid: cms:cms-enrollments-api
  name: Centers for Medicare and Medicaid Services Enrollments API
  description: Enrollment grouping validation and information.
  humanURL: https://developer.cms.gov/marketplace-api/
  baseURL: https://marketplace.api.healthcare.gov/api/v1
  tags:
  - Enrollments
  properties:
  - type: OpenAPI
    url: openapi/cms-enrollments-api-openapi.yml
  - type: Documentation
    url: https://developer.cms.gov/marketplace-api/
  - type: Authentication
    url: https://developer.cms.gov/marketplace-api/key-request.html
  - type: Documentation
    url: https://bluebutton.cms.gov/api-documentation
  - type: Sandbox
    url: https://sandbox.bluebutton.cms.gov/v1/accounts/login
  - type: GitHubRepository
    url: https://github.com/CMSgov/bluebutton-web-server
  - type: Documentation
    url: https://developer.cms.gov/ppl-api/
- aid: cms:cms-geography-api
  name: Centers for Medicare and Medicaid Services Geography API
  description: Geographic data, including information on states, counties, and zipcodes.
  humanURL: https://developer.cms.gov/marketplace-api/
  baseURL: https://marketplace.api.healthcare.gov/api/v1
  tags:
  - Geography
  properties:
  - type: OpenAPI
    url: openapi/cms-geography-api-openapi.yml
  - type: Documentation
    url: https://developer.cms.gov/marketplace-api/
  - type: Authentication
    url: https://developer.cms.gov/marketplace-api/key-request.html
  - type: Documentation
    url: https://bluebutton.cms.gov/api-documentation
  - type: Sandbox
    url: https://sandbox.bluebutton.cms.gov/v1/accounts/login
  - type: GitHubRepository
    url: https://github.com/CMSgov/bluebutton-web-server
  - type: Documentation
    url: https://developer.cms.gov/ppl-api/
- aid: cms:cms-households-eligibility-api
  name: Centers for Medicare and Medicaid Services Households & Eligibility API
  description: Household specific calculations, including eligibility information, out of pocket costs, poverty levels, and
    cost benchmarks.
  humanURL: https://developer.cms.gov/marketplace-api/
  baseURL: https://marketplace.api.healthcare.gov/api/v1
  tags:
  - Households & Eligibility
  properties:
  - type: OpenAPI
    url: openapi/cms-households-eligibility-api-openapi.yml
  - type: Documentation
    url: https://developer.cms.gov/marketplace-api/
  - type: Authentication
    url: https://developer.cms.gov/marketplace-api/key-request.html
  - type: Documentation
    url: https://bluebutton.cms.gov/api-documentation
  - type: Sandbox
    url: https://sandbox.bluebutton.cms.gov/v1/accounts/login
  - type: GitHubRepository
    url: https://github.com/CMSgov/bluebutton-web-server
  - type: Documentation
    url: https://developer.cms.gov/ppl-api/
- aid: cms:cms-insurance-issuers-api
  name: Centers for Medicare and Medicaid Services Insurance Issuers API
  description: Data related to health insurance issuers on the marketplace.
  humanURL: https://developer.cms.gov/marketplace-api/
  baseURL: https://marketplace.api.healthcare.gov/api/v1
  tags:
  - Insurance Issuers
  properties:
  - type: OpenAPI
    url: openapi/cms-insurance-issuers-api-openapi.yml
  - type: Documentation
    url: https://developer.cms.gov/marketplace-api/
  - type: Authentication
    url: https://developer.cms.gov/marketplace-api/key-request.html
  - type: Documentation
    url: https://bluebutton.cms.gov/api-documentation
  - type: Sandbox
    url: https://sandbox.bluebutton.cms.gov/v1/accounts/login
  - type: GitHubRepository
    url: https://github.com/CMSgov/bluebutton-web-server
  - type: Documentation
    url: https://developer.cms.gov/ppl-api/
- aid: cms:cms-insurance-plans-api
  name: Centers for Medicare and Medicaid Services Insurance Plans API
  description: Data on both health and dental insurance plans.
  humanURL: https://developer.cms.gov/marketplace-api/
  baseURL: https://marketplace.api.healthcare.gov/api/v1
  tags:
  - Insurance Plans
  properties:
  - type: OpenAPI
    url: openapi/cms-insurance-plans-api-openapi.yml
  - type: Documentation
    url: https://developer.cms.gov/marketplace-api/
  - type: Authentication
    url: https://developer.cms.gov/marketplace-api/key-request.html
  - type: Documentation
    url: https://bluebutton.cms.gov/api-documentation
  - type: Sandbox
    url: https://sandbox.bluebutton.cms.gov/v1/accounts/login
  - type: GitHubRepository
    url: https://github.com/CMSgov/bluebutton-web-server
  - type: Documentation
    url: https://developer.cms.gov/ppl-api/
- aid: cms:cms-plans-api
  name: Centers for Medicare and Medicaid Services Plans API
  description: The Plans API from Centers for Medicare and Medicaid Services — 1 operation(s) for plans.
  humanURL: https://developer.cms.gov/marketplace-api/
  baseURL: https://marketplace.api.healthcare.gov/api/v1
  tags:
  - Plans
  properties:
  - type: OpenAPI
    url: openapi/cms-plans-api-openapi.yml
  - type: Documentation
    url: https://developer.cms.gov/marketplace-api/
  - type: Authentication
    url: https://developer.cms.gov/marketplace-api/key-request.html
  - type: Documentation
    url: https://bluebutton.cms.gov/api-documentation
  - type: Sandbox
    url: https://sandbox.bluebutton.cms.gov/v1/accounts/login
  - type: GitHubRepository
    url: https://github.com/CMSgov/bluebutton-web-server
  - type: Documentation
    url: https://developer.cms.gov/ppl-api/
- aid: cms:cms-provider-drug-coverage-api
  name: Centers for Medicare and Medicaid Services Provider & Drug Coverage API
  description: Lookup information on providers, drugs, and what is covered under what plans.
  humanURL: https://developer.cms.gov/marketplace-api/
  baseURL: https://marketplace.api.healthcare.gov/api/v1
  tags:
  - Provider & Drug Coverage
  properties:
  - type: OpenAPI
    url: openapi/cms-provider-drug-coverage-api-openapi.yml
  - type: Documentation
    url: https://developer.cms.gov/marketplace-api/
  - type: Authentication
    url: https://developer.cms.gov/marketplace-api/key-request.html
  - type: Documentation
    url: https://bluebutton.cms.gov/api-documentation
  - type: Sandbox
    url: https://sandbox.bluebutton.cms.gov/v1/accounts/login
  - type: GitHubRepository
    url: https://github.com/CMSgov/bluebutton-web-server
  - type: Documentation
    url: https://developer.cms.gov/ppl-api/
- aid: cms:cms-socrata-open-data
  name: CMS Socrata Open Data API (data.cms.gov)
  tags:
  - Datasets
  - Medicare
  - Open Data
  - Provider Data
  - SODA
  - Socrata
  humanURL: https://data.cms.gov/
  baseURL: https://data.cms.gov/data.json
  properties:
  - url: https://data.cms.gov/
    type: Website
  - url: https://data.cms.gov/provider-data/docs
    type: Documentation
  - url: https://developer.cms.gov/data-cms/
    type: Developer
  - url: https://data.cms.gov/data-api
    type: DataAPI
  description: data.cms.gov hosts hundreds of CMS datasets including Medicare Fee-for-Service utilization and payment data,
    Provider of Services files, Medicare Part B/D Prescriber summaries, Marketplace open enrollment data, and COVID-19 nursing
    home data, available via the data.cms.gov Data API (JSON) and the CMS Provider Data Catalog Socrata-compatible endpoints.
- aid: cms:cms-provider-data-catalog
  name: CMS Provider Data Catalog API (Care Compare)
  tags:
  - Care Compare
  - Dialysis Compare
  - Hospital Compare
  - Nursing Home Compare
  - Provider Data
  - Quality
  humanURL: https://data.cms.gov/provider-data/
  baseURL: https://data.cms.gov/provider-data/api/1/
  properties:
  - url: https://data.cms.gov/provider-data/
    type: Website
  - url: https://data.cms.gov/provider-data/docs
    type: Documentation
  - url: https://data.cms.gov/provider-data/api/1/metastore/schemas/dataset/items
    type: Metastore
  description: The Provider Data Catalog API (formerly Hospital Compare) exposes the Medicare.gov Care Compare datasets including
    Hospital, Nursing Home, Home Health, Hospice, Physician, Long-Term Care Hospital, Inpatient Rehab, and Dialysis Facility
    quality measures as DCAT-based datasets with Datastore query endpoints.
- aid: cms:nppes-npi-registry
  name: NPPES NPI Registry API
  tags:
  - Credentialing
  - NPI
  - NPPES
  - Provider Identifier
  - Provider Registry
  humanURL: https://npiregistry.cms.hhs.gov/
  baseURL: https://npiregistry.cms.hhs.gov/api/
  properties:
  - url: https://npiregistry.cms.hhs.gov/
    type: Website
  - url: https://npiregistry.cms.hhs.gov/api-page
    type: Documentation
  - url: https://npiregistry.cms.hhs.gov/help-api/
    type: Help
  description: The NPPES NPI Registry API provides free public access to look up active National Provider Identifier records
    for individual and organizational healthcare providers, supporting FHIR-compatible JSON responses used widely in credentialing,
    directory, and claims validation workflows.
- aid: cms:healthcare-gov-marketplace
  name: Healthcare.gov Marketplace API
  tags:
  - ACA
  - Exchange
  - Marketplace
  - Plan Finder
  - QHP
  humanURL: https://www.healthcare.gov/developers/
  baseURL: https://marketplace.api.healthcare.gov/api/v1/
  properties:
  - url: skills/cms-search-marketplace-plans.md
    type: AgentSkill
  - url: https://www.healthcare.gov/developers/
    type: Developer
  - url: https://github.com/CMSgov/marketplace-api-examples
    type: Examples
  - url: https://data.healthcare.gov/
    type: OpenData
  description: The Healthcare.gov Marketplace API and accompanying Open Data Plan Finder exposes Qualified Health Plan (QHP)
    details, plan attributes, provider networks, and formularies for the Federally-Facilitated Marketplace states, enabling
    third-party plan comparison and enrollment experiences.
- aid: cms:qpp-measures-api
  name: CMS Quality Payment Program (QPP) Measures API
  baseURL: https://qpp.cms.gov/api/measures
  tags:
  - MIPS
  - Measures
  - Quality
  - QPP
  - Value-Based
  humanURL: https://qpp.cms.gov/
  properties:
  - url: https://qpp.cms.gov/
    type: Website
  - url: https://cmsgov.github.io/qpp-measures-data/
    type: Documentation
  - url: https://github.com/CMSgov/qpp-measures-data
    type: SourceCode
  description: The Quality Payment Program Measures Data repository and REST API publish machine-readable specifications of
    MIPS quality, promoting interoperability, improvement activities, and cost measures for each performance year, supporting
    vendor QPP submissions and analytics.
- aid: cms:medicare-coverage-database
  name: Medicare Coverage Database (MCD) API
  tags:
  - Coverage
  - LCD
  - Mac
  - NCD
  - Policy
  tags_raw:
  - Coverage
  - LCD
  - MAC
  - NCD
  - Policy
  humanURL: https://www.cms.gov/medicare-coverage-database/
  properties:
  - url: https://www.cms.gov/medicare-coverage-database/
    type: Website
  - url: https://www.cms.gov/medicare-coverage-database/downloads/downloads.aspx
    type: Downloads
  description: The Medicare Coverage Database publishes National Coverage Determinations (NCDs), Local Coverage Determinations
    (LCDs), articles, and coding guidance used to determine Medicare coverage and reimbursement policies, distributed via
    downloadable datasets and JSON/CSV query endpoints.
- aid: cms:centers-for-medicare-and-medicaid-services-capability-api
  name: Centers for Medicare and Medicaid Services Capability API
  description: FHIR server capability statements and metadata.
  humanURL: https://bluebutton.cms.gov/
  baseURL: https://api.bluebutton.cms.gov/v2/fhir/
  tags:
  - Capabilities
  tags_raw:
  - Capability
  properties:
  - type: OpenAPI
    url: openapi/cms-capability-api-openapi.yml
  - type: AgentSkill
    url: skills/cms-authorize-beneficiary-bluebutton.md
  - type: CapabilityStatement
    url: conformance/cms-bluebutton-capabilitystatement.json
  - type: OpenIDConnect
    url: https://api.bluebutton.cms.gov/.well-known/openid-configuration
  - type: SDKs
    url: packages/cms-packages.yml
  - type: Website
    url: https://bluebutton.cms.gov/
  - type: Developer
    url: https://bluebutton.cms.gov/developers/
  - type: Documentation
    url: https://bluebutton.cms.gov/api-documentation/
  - type: Sandbox
    url: https://sandbox.bluebutton.cms.gov/
  - type: Resources
    url: https://bluebutton.cms.gov/resources/
- aid: cms:centers-for-medicare-and-medicaid-services-coverage-api
  name: Centers for Medicare and Medicaid Services Coverage API
  description: Beneficiary coverage records.
  humanURL: https://bluebutton.cms.gov/
  baseURL: https://api.bluebutton.cms.gov/v2/fhir/
  tags:
  - Coverage
  properties:
  - type: OpenAPI
    url: openapi/cms-coverage-api-openapi.yml
  - type: Website
    url: https://bluebutton.cms.gov/
  - type: Developer
    url: https://bluebutton.cms.gov/developers/
  - type: Documentation
    url: https://bluebutton.cms.gov/api-documentation/
  - type: Sandbox
    url: https://sandbox.bluebutton.cms.gov/
  - type: Resources
    url: https://bluebutton.cms.gov/resources/
- aid: cms:centers-for-medicare-and-medicaid-services-explanationofbenefit-api
  name: Centers for Medicare and Medicaid Services ExplanationOfBenefit API
  description: Medicare claims expressed as ExplanationOfBenefit resources.
  humanURL: https://bluebutton.cms.gov/
  baseURL: https://api.bluebutton.cms.gov/v2/fhir/
  tags:
  - ExplanationOfBenefit
  properties:
  - type: OpenAPI
    url: openapi/cms-explanationofbenefit-api-openapi.yml
  - type: Website
    url: https://bluebutton.cms.gov/
  - type: Developer
    url: https://bluebutton.cms.gov/developers/
  - type: Documentation
    url: https://bluebutton.cms.gov/api-documentation/
  - type: Sandbox
    url: https://sandbox.bluebutton.cms.gov/
  - type: Resources
    url: https://bluebutton.cms.gov/resources/
- aid: cms:centers-for-medicare-and-medicaid-services-patient-api
  name: Centers for Medicare and Medicaid Services Patient API
  description: Beneficiary (Patient) resources.
  humanURL: https://bluebutton.cms.gov/
  baseURL: https://api.bluebutton.cms.gov/v2/fhir/
  tags:
  - Patient
  properties:
  - type: OpenAPI
    url: openapi/cms-patient-api-openapi.yml
  - type: Website
    url: https://bluebutton.cms.gov/
  - type: Developer
    url: https://bluebutton.cms.gov/developers/
  - type: Documentation
    url: https://bluebutton.cms.gov/api-documentation/
  - type: Sandbox
    url: https://sandbox.bluebutton.cms.gov/
  - type: Resources
    url: https://bluebutton.cms.gov/resources/
common:
- type: IssueTracker
  url: https://github.com/CMSgov/bcda-app/issues
- type: Releases
  url: https://github.com/CMSgov/bcda-app/releases
- type: SecurityPolicy
  url: https://github.com/CMSgov/bcda-app/blob/main/SECURITY.md
- type: CodeOfConduct
  url: https://github.com/CMSgov/bcda-app/blob/main/CODE_OF_CONDUCT.md
- type: ContributionGuide
  url: https://github.com/CMSgov/bcda-app/blob/main/CONTRIBUTING.md
- type: License
  name: CC0-1.0
  url: https://github.com/CMSgov/bcda-app/blob/main/LICENSE
- type: AgenticAccess
  url: agentic-access/cms-agentic-access.yml
- type: DomainSecurity
  url: security/cms-domain-security.yml
- type: Authentication
  url: authentication/cms-authentication.yml
- type: Portal
  url: https://developer.cms.gov/
- type: DataPortal
  url: https://data.cms.gov/
- type: ProviderDataCatalog
  url: https://data.cms.gov/provider-data/
- type: GitHubOrganization
  url: https://github.com/cmsgov
- type: InteroperabilityGuidance
  url: https://www.cms.gov/priorities/burden-reduction/overview/interoperability/implementation-guides-standards/application-programming-interfaces-apis-relevant-standards-implementation-guides-igs
- type: PublicDatasets
  url: https://www.cms.gov/data-research/cms-data/data-available-everyone
- type: OAuthScopes
  url: scopes/cms-scopes.yml
- type: Website
  url: https://www.cms.gov/
- type: Developer
  url: https://developer.cms.gov/
- type: OpenData
  url: https://data.cms.gov/
- type: ProviderData
  url: https://data.cms.gov/provider-data/
- type: BlueButton
  url: https://bluebutton.cms.gov/
- type: BCDA
  url: https://bcda.cms.gov/
- type: DPC
  url: https://dpc.cms.gov/
- type: NPPES
  url: https://npiregistry.cms.hhs.gov/
- type: Marketplace
  url: https://www.healthcare.gov/developers/
- type: QPP
  url: https://qpp.cms.gov/
- type: GitHubOrganization
  url: https://github.com/CMSgov
- type: PrivacyPolicy
  url: https://www.cms.gov/privacy
- type: Integrations
  url: https://www.cms.gov/marketplace/in-person-assisters/information-partners
- type: WellKnown
  url: well-known/cms-well-known.yml
- type: OpenIDConnect
  url: https://api.bluebutton.cms.gov/.well-known/openid-configuration
- type: Packages
  url: packages/cms-packages.yml
- type: SDKs
  url: packages/cms-packages.yml
- type: MCPServer
  url: mcp/cms-mcp.yml
- type: ToolCrosswalk
  url: mcp/cms-tool-crosswalk.yml
- type: LLMsTxt
  url: llms/cms-llms.txt
- type: Conformance
  url: conformance/cms-conformance.yml
- type: Compliance
  url: https://security.cms.gov/
- type: TrustCenter
  url: https://security.cms.gov/
- type: ErrorCatalog
  url: errors/cms-problem-types.yml
- type: Lifecycle
  url: lifecycle/cms-lifecycle.yml
- type: StatusPage
  url: https://ab2d.cms.gov/status
- type: Deprecation
  url: https://bcda.cms.gov/v3/welcome-v3
- type: Versioning
  url: https://bcda.cms.gov/bcda-data/difference-between-v1-v2.html
- type: ChangeLog
  url: changelog/cms-changelog.yml
- type: Security
  url: https://www.cms.gov/vulnerability-disclosure-policy
- type: VulnerabilityDisclosure
  url: security/cms-vulnerability-disclosure.yml
- type: Conventions
  url: conventions/cms-conventions.yml
- type: Sandbox
  url: sandbox/cms-sandbox.yml
- type: CLI
  url: cli/cms-cli.yml
- type: Components
  url: components/cms-components.yml
- type: DataModel
  url: data-model/cms-data-model.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Plans
  url: plans/cms-plans-pricing.yml
- type: RateLimits
  url: rate-limits/cms-rate-limits.yml
- type: FinOps
  url: finops/cms-finops.yml
- type: SpectralRules
  url: rules/cms-jsonschema-spectral-rules.yml
- type: JSONLDContext
  url: json-ld/cms-context.jsonld
- type: Examples
  url: examples/marketplace-plan-example.json
- type: Examples
  url: examples/marketplace-household-example.json
- type: Examples
  url: examples/marketplace-provider-example.json
- type: JSONSchema
  url: json-schema/marketplace-plan.json
- type: JSONSchema
  url: json-schema/marketplace-household.json
- type: JSONSchema
  url: json-schema/marketplace-eligibility.json
- type: JSONSchema
  url: json-schema/marketplace-provider.json
- type: JSONSchema
  url: json-schema/marketplace-drug.json
- type: PostmanCollection
  url: collections/cms-cms-blue-button-2.postman_collection.json
- type: Overlay
  url: overlays/cms-bcda-overlay.yaml
- type: Overlay
  url: overlays/cms-ab2d-overlay.yaml
- type: DeveloperPortal
  url: https://developer.cms.gov/
- type: Documentation
  url: https://bcda.cms.gov/api-documentation.html
- type: APIReference
  url: https://bluebutton.cms.gov/api-documentation/
- type: GettingStarted
  url: https://bcda.cms.gov/api-documentation/get-a-bearer-token.html
- type: Support
  url: https://bcda.cms.gov/support.html
- type: SignUp
  url: https://sandbox.bluebutton.cms.gov/v1/accounts/login
- type: TermsOfService
  url: https://bluebutton.cms.gov/terms/
- type: Vocabulary
  url: vocabulary/cms-vocabulary.json
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-08-15'
  status: enriched
  artifacts_added: 44
  pass: local-v1