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 Guide (CARIN Consumer Directed Payer Data Exchange), serving ExplanationOfBenefit, Patient, and…
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Updated
Aug 4, 2026