JA Technology Solutions
FHIR Resource Explorer
Parse HL7 FHIR JSON resources with resource-specific rendering. Supports Patient, Observation, Bundle, and more.
FHIR Resource Explorer
Parse and display HL7 FHIR (Fast Healthcare Interoperability Resources) JSON data with resource-specific views for Patient, Observation, Encounter, Condition, MedicationRequest, AllergyIntolerance, and more. Navigate resources, bundles, and nested elements in a collapsible tree with reference resolution and CodeableConcept display (system, code, and display shown together). For Bundle resources, browse entries by type with entry counts, fullUrl references, and request/response metadata for transaction bundles. Export resource elements as a flat CSV or Excel table with paths, values, and data types — useful for data mapping and migration planning. Everything runs in your browser — no PHI is uploaded to any server.
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What Is HL7 FHIR?
FHIR (Fast Healthcare Interoperability Resources, pronounced “fire”) is the modern standard for healthcare data exchange, developed by HL7 International. Unlike the pipe-delimited HL7 v2.x format, FHIR uses RESTful APIs with JSON or XML payloads built around discrete “resources” — Patient, Observation, Encounter, Condition, MedicationRequest, and over 140 others. Each resource has a defined structure with required and optional fields, coded values from standard terminologies (SNOMED CT, LOINC, ICD-10), and references to related resources. FHIR R4 is the current normative release and is mandated by the ONC (Office of the National Coordinator) for certified health IT systems in the United States.
FHIR vs HL7 v2.x
HL7 v2.x is message-based: systems send entire messages (an admit event, a lab result) through point-to-point interfaces. FHIR is resource-based and API-driven: applications query for specific resources using standard HTTP methods (GET, POST, PUT, DELETE). This makes FHIR more accessible to modern developers and enables use cases like patient-facing apps, population health queries, and third-party data access under the 21st Century Cures Act. In practice, most healthcare organizations run both — v2.x for legacy system interfaces and FHIR for newer API-based integrations and regulatory compliance.
Healthcare Data Integration
Whether you are building FHIR-based APIs for regulatory compliance, integrating with EHR systems like Epic or Cerner, or bridging between FHIR and legacy HL7 v2.x interfaces, the complexity lies in resource mapping, terminology translation, and handling the real-world variability of clinical data. I build healthcare data integrations that span both standards, connecting clinical systems, payer platforms, and patient-facing applications. Learn about integration services or get in touch to discuss your FHIR integration requirements.
All tools run entirely in your browser. Your data never leaves your machine. Need help? Ask James.