# Epic FHIR R4 API

**Canonical:** https://apis.io/apis/epic-systems/epic-fhir-r4-api/  
**Provider:** Epic Systems — https://apis.io/providers/epic-systems/  
**Base URL:** https://fhir.epic.com/interconnect-fhir-oauth/api/FHIR/R4  
**Documentation:** https://fhir.epic.com/Specifications

Epic FHIR R4 API is one of 6 APIs that [Epic Systems](https://apis.io/providers/epic-systems/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include FHIR, R4, and US Core. The published artifact set on APIs.io includes API documentation, an API reference, and authentication docs.

Epic's HL7 FHIR R4 (4.0.1) REST API, aligned to the US Core implementation guides and exposing 59 resource types (Patient, Encounter, Observation, Condition, MedicationRequest, DiagnosticReport, DocumentReference, Appointment, Coverage, ExplanationOfBenefit, and more) with read, search-type, create, and update interactions. Authorized with SMART on FHIR / OAuth 2.0. A live public sandbox CapabilityStatement was harvested verbatim.

## Machine-readable artifacts (6)

- **CapabilityStatement** — https://raw.githubusercontent.com/api-evangelist/epic-systems/refs/heads/main/fhir/epic-fhir-r4-capabilitystatement.json
- **SMARTConfiguration** — https://raw.githubusercontent.com/api-evangelist/epic-systems/refs/heads/main/fhir/epic-fhir-r4-smart-configuration.json
- **Documentation** — https://fhir.epic.com/Documentation?docId=fhirtutorial
- **APIReference** — https://fhir.epic.com/Specifications
- **Authentication** — https://fhir.epic.com/Documentation?docId=oauth2
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/epic-systems/refs/heads/main/apis.yml

## Other Epic Systems APIs (5)

- [Epic FHIR STU3 API](https://apis.io/apis/epic-systems/epic-fhir-stu3-api/)
- [Epic FHIR DSTU2 API](https://apis.io/apis/epic-systems/epic-fhir-dstu2-api/)
- [Epic SMART on FHIR Authorization](https://apis.io/apis/epic-systems/epic-smart-on-fhir-authorization/)
- [Epic FHIR Bulk Data Access API](https://apis.io/apis/epic-systems/epic-fhir-bulk-data-api/)
- [Epic CDS Hooks API](https://apis.io/apis/epic-systems/epic-cds-hooks-api/)

## Tags

FHIR, R4, US Core

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/epic-systems/epic-fhir-r4-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/epic-systems/.