Downtime for Upgrade: The FHIR Developer Sandbox will have a scheduled downtime beginning November 10th at approximately 8:00 AM US Central Time expected to last throughout the day for an upgrade to the November 2026 Epic version. All connections to the Sandbox including the Hyperdrive Client Test Harness, the ‘Try It’ buttons on API Specifications, and the ‘Try It’ button in the Launching your app from Epic section of the website will be unavailable. This banner will be updated when the upgrade is complete.
When everyone's on the same page, technology can make cool things happen. Epic is a strong supporter of the HL7® FHIR® standard as the future of REST-based interoperability. In addition to participating in the standards development process with HL7, Epic is also a member of the Argonaut Project and the Da Vinci Project, each aimed at accelerating the adoption of FHIR.
Epic's work with FHIR means that any health system, hospital, or clinic that uses Epic's comprehensive health record system can connect to any app that also supports FHIR to exchange health information, including but not limited to the U.S. Core Data for Interoperability – or USCDI - data classes and elements.
Epic on FHIR is a free resource for developers who create apps for use by patients and healthcare organizations.
Test APIs against example data
Software registration and client identifier management
Additional developer support documentation