CMS Blue Button 2.0 — independent third-party profile of a public API surface, by API Evangelist. Blue Button 2.0 is the Centers for Medicare & Medicaid Services (CMS) API that lets Medicare beneficiaries share their Parts A, B, and D claims data with applications they trust. It is a FHIR R4 API conforming to the CARIN Blue Button Implementation Gu
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Updated
Oct 29, 2026