For developers
CARIN Blue Button, explained.
CARIN Consumer Directed Payer Data Exchange, also called CARIN Blue Button, is a FHIR R4 implementation guide for sharing payer claims data with consumers. Flexpa's patient access documentation lists it alongside US Core for clinical data and SMART App Launch for authorization.
Updated 2026-11-11
How it works
- CARIN Blue Button
- FHIR R4 profiles
- Payer claims exchange
The guides that matter
| Guide | Covers |
|---|---|
| CARIN Blue Button | Claims and coverage from payers |
| US Core | Clinical data (USCDI) in FHIR R4 |
| SMART App Launch | OAuth 2.0-based authorization |
Questions
What is CARIN Blue Button?
CARIN Blue Button is the CARIN Consumer Directed Payer Data Exchange implementation guide. It defines FHIR R4 profiles for sharing payer claims data with consumers.
Does Flexpa normalize payer differences?
Flexpa applies documented FHIR transforms to returned records and normalizes financial adjudication codes for supported payer endpoints. These transforms do not guarantee that every source supplies every field.