Crate fhir_terminology 

The terminology engine.

Implements the FHIR terminology operations ($lookup, $validate-code, $expand, $subsumes, $translate) over the code system provider seam, dispatched per FHIR version against the generated fhir-types contracts. SNOMED CT is the first provider; every other code system reaches the operations through the same seam. No specification governs the seam itself (our own design); the FHIR CodeSystem metadata is the capability declaration a provider returns (https://hl7.org/fhir/R4B/codesystem.html).

Modules

artifact

What an artifact directory holds, before a provider opens it.

capabilities

TerminologyCapabilities from the loaded providers’ declarations (https://hl7.org/fhir/R4B/terminologycapabilities.html, https://hl7.org/fhir/R5/terminologycapabilities.html).

classification

The classification provider: one ClaML or ICD-10-CM release read from its artifact directory (store.redb, hierarchy.bin, text.bin, and manifest.json with kind = classification).

clock

The one place the engine reads the wall clock for a FHIR dateTime.

compose

The compose layer: ValueSet.compose evaluated once, above every provider.

conceptmap

ConceptMap resources as $translate evaluates them.

fhir_codesystem

The generic provider for any code system published as a FHIR CodeSystem resource: HL7 Terminology, custom systems, and supplements.

fhir_core

The terminology the FHIR specification itself defines, per served version.

icd11

The ICD-11 provider: one of the three WHO code systems (the MMS and ICF linearizations, the Foundation) read from its artifact directory.

language

The display language of a request: a language range list resolved against the languages a code system carries.

loinc

The LOINC provider: one release read from its artifact directory (store.redb, hierarchy.bin, text.bin, and manifest.json).

normal_form

The Necessary Normal Form of a concept, rendered in SNOMED CT Compositional Grammar.

operations

The FHIR terminology operations over the seam, one module each.

position

Positions inside a refused value: a parser’s byte offset, carried back through percent-encoding and counted as the column a client reads.

provider

The code system provider seam.

registries

The registry and grammar code systems: BCP 47 language tags, BCP 13 media types, and ISO 3166-1 country codes.

registry

The loaded code system versions, by system URI, with the default-version rule.

rxnorm

The RxNorm provider: one release read from its artifact directory (store.redb, text.bin, relations.bin, atoms.bin, and manifest.json).

snomed

The SNOMED CT provider: one built edition version read from its artifact directory (store.redb, hierarchy.bin, text.bin, and manifest.json).

stored

The code systems the server reads from a built artifact, served as one provider.

supplement

Code system supplements applied to a provider’s designations and properties (CodeSystem.content = supplement, https://hl7.org/fhir/R4B/codesystem.html#supplements).

text_match

Word-prefix matching over designations without a built text index.

valueset

ValueSet resources as the compose layer evaluates them.

versioned

A store of canonical resources by url and version, with the default-version rule the value sets and concept maps share.