CodeSystem

Code systems maintained within Snow Owl are exposed (read-only) via the endpoints /CodeSystem and /CodeSystem/{codeSystemId}. Supported concept properties are handled and returned if requested. The currently exposed code systems are:

Snow Owl OSS:

• SNOMED CT

• Internal (FHIR) Code Systems (terminology subset)

Snow Owl Pro:

• ATC

• ICD-10

• LOINC

• OPCS

SNOMED CT

All standard and default SNOMED CT properties are supported, including the relationship type properties. In addition to the FHIR SNOMED CT properties, Snow Owl can return the effective time property, with the URI http://snomed.info/field/Concept.effectiveTime.

$lookup

Both GET as well as POST HTTP methods are supported. Concepts are queried based on code, version, system or Coding. Designations are included as part of the response as well as supported concept properties when requested. No date parameter is supported.

For SNOMED CT, all common and SNOMED CT properties are supported, including all active relationship types.

$subsumes

Both GET as well as POST HTTP methods are supported. Subsumption testing is supported for ICD-10 and SNOMED CT terminologies.