Full definition
FHIR (pronounced "fire") is the modern interoperability standard for exchanging healthcare data. Published by HL7 International, it organises clinical concepts as discrete "resources" (Patient, Encounter, Observation, MedicationRequest, etc.) accessible via standard RESTful APIs returning JSON or XML. Compared to HL7 v2 (a 1989 message-pipe standard) and CCD (a 2007 document standard), FHIR is web-native and dramatically lower-friction to implement.
FHIR R4 (released 2019) is the current production standard globally. R5 is published but adoption lags. Major EHRs (Epic, Cerner, Meditech), national health systems (NHS, Singapore NEHR), and patient-facing apps (Apple Health, Google Fit) all expose FHIR APIs. The US 21st Century Cures Act mandates FHIR-based patient-data access; the EU European Health Data Space mandates similar interoperability via FHIR.
FHIR is the "API standard" for healthcare. If you're integrating any healthcare system in 2026, FHIR is your default. Older protocols are still used in legacy environments but new integrations should be FHIR-first.
Where fhir (fast healthcare interoperability resources) is used
- EMR / EHR API integrations
- Patient-facing apps reading clinical data
- Cross-clinic / cross-hospital data exchange
- National health information exchanges
- Clinical research data extraction
- Government interoperability mandates (US Cures, EU EHDS)
- Bulk-data export for population health
Types of fhir (fast healthcare interoperability resources)
FHIR R4
Current production standard. Implemented globally.
FHIR R5
Newer release; adoption lags R4 in production.
SMART on FHIR
OAuth-based extension for app integration into EHR contexts.
Bulk Data (Flat FHIR)
NDJSON-based bulk export for population-health analytics.
FHIR Implementation Guides
Country-specific or use-case-specific profiles (US Core, IPS, Da Vinci, AU Base).
Quantified benefits
- ▸Web-native (REST + JSON) — orders-of-magnitude lower integration cost vs HL7 v2
- ▸Per-resource granularity — read only what you need
- ▸OAuth + SMART for secure app integration
- ▸Global standard — same API shape across vendors
Frequently asked
FHIR vs HL7 v2 — which should I use?+
FHIR for any new integration. HL7 v2 only when you must integrate with a legacy system that exposes nothing else. Most modern EHRs expose both; lead with FHIR.
Is FHIR enough for full interoperability?+
API shape isn't enough — you also need a shared identity layer (matching the same patient across systems), a shared terminology layer (SNOMED-CT, LOINC, ICD-10), and consent/authorisation. FHIR is necessary, not sufficient.
Does MOVO-X expose a FHIR API?+
Yes. The MOVO-X clinic platform exposes an HL7 FHIR R4 API for patient, encounter, observation, and medication resources. Used for EMR/EHR integration, patient-app access, and cross-clinic exchange.
What about FHIR security?+
Production FHIR APIs run over OAuth 2.0 with SMART scopes. MOVO-X enforces per-clinic data isolation, audit logging on every API call, and rate limits.
Can my legacy HL7 v2 system talk to FHIR?+
Yes — via a translation layer. MOVO-X integration includes HL7 v2 ↔ FHIR translation for legacy-system bridging.