Terminology & Code Systems
Search, browse, and validate clinical coding systems
HL7 Workbench integrates 129 clinical vocabularies with code system metadata, OID registry lookups, and V2-to-FHIR concept mappings. These tools work together with the parser's terminology validation to verify coded values in your messages.
Terminology Search
Search across 17 curated clinical code systems (ICD-10-CM, ICD-11, ICD-9-CM, ICD-O-3, LOINC, HCPCS, ICD-10-PCS, UCUM, RxNorm, RxNorm Extension, RxTerms, ATC, NDC, SPL, CVX, SNOMED CT, MeSH) by code or name, or widen the scope to search every served vocabulary
Code Systems
Browse 642 code system definitions with FHIR URIs, OIDs, and HL7 v2 table mappings
OID Registry
Look up 6,700+ HL7-registered Object Identifiers with their maintainers
V2-to-FHIR Mappings
Navigate segment, data type, concept, and message mappings from the HL7 V2-to-FHIR IG
Terminology validation in the parser automatically checks coded values against these same vocabularies. It is on by default. Toggle it with the Server button in the Validation panel's toolbar, or under Settings → Terminology Server in the parser.
Related Pages
Terminology Search
Find codes and concepts across 17 curated code systems, or the full vocabulary set
Code Systems
Browse 642 code system definitions with FHIR URI and OID mappings
OID Registry
Browse 6,700+ HL7-registered Object Identifiers
V2-to-FHIR Mappings
Navigate the HL7 V2-to-FHIR Implementation Guide mapping tables
Administrative Data
Provider, demographic, and encounter reference data