v7.3.0

ValueSet

ValueSet API

The endpoints /ValueSet and /ValueSet/{valueSetId} and corresponding operations expose the following types of terminology resources:

  • SNOMED CT Simple Type Reference Sets with Concepts as referenced components.

  • SNOMED CT Query Type Reference Sets with ECL expressions (each member is a Value Set)

  • Snow Owl's generic Value Sets

Delete and create operations are not implemented.

$expand

All value sets accessible via the /ValueSet endpoints can be expanded.

For SNOMED CT URIs, implicit value sets are supported:

  • ?fhir_vs - all Concept IDs in the edition/version. If the base URI is http://snomed.info/sct, this means all possible SNOMED CT concepts

  • ?fhir_vs=isa/[sctid] - all concept IDs that are subsumed by the specified Concept.

  • ?fhir_vs=refset - all concept ids that correspond to real references sets defined in the specified SNOMED CT edition

  • ?fhir_vs=refset/[sctid] - all concept IDs in the specified reference set

The in-parameters are not yet supported.

$validate-code

Codes can be validated against a given Value Set specified by the value set's logical id or canonical URL. In terms of Snow Owl terminology components, codes are validated against:

  • SNOMED CT Simple Type Reference Sets with Concepts as referenced components.

  • SNOMED CT Query Type Reference Sets with ECL expressions (each member is a Value Set)

  • Snow Owl's generic Value Sets

Validation performs the following checks:

  • The existence of the given Value Set (error if not found)

  • The existence of the reference in the existing Value Set to the given code (error if not found)

  • The existence of the given code in the system (error if not found)

  • Potential version mismatch (_error if the reference points to a version that is different to the code's version)

  • The status of the given code and reference (warning if code is inactive while reference is active)

For SNOMED CT URIs, implicit value sets are supported:

  • ?fhir_vs - all Concept IDs in the edition/version. If the base URI is http://snomed.info/sct, this means all possible SNOMED CT concepts

  • ?fhir_vs=isa/[sctid] - all concept IDs that are subsumed by the specified Concept.

  • ?fhir_vs=refset - all concept ids that correspond to real references sets defined in the specified SNOMED CT edition

  • ?fhir_vs=refset/[sctid] - all concept IDs in the specified reference set

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