FHIR R4 vs R5

Compare FHIR R4 and R5: resources added and removed, and element-level changes for the most-used resources such as Patient, Observation and Encounter.

• FHIR R4 vs R5 — part of the free FHIR Toolbox library.
• Runs entirely in your browser: your FHIR data is never uploaded to a server.

FHIR Toolbox is a free, privacy-first collection of HL7 FHIR utilities by Omindra Labs. Every tool performs zero-server processing — your health data never leaves your device.