{description: The US Core DocumentReference Type Value Set includes all LOINC  values whose SCALE is DOC in the LOINC database and the HL7 v3 Code System NullFlavor concept 'unknown'. This version changes the filter to adhere to case sensitive requirements from 6.8.0 of HAPI FHIR., package_name: fhir.deep6.ai, name: USCoreDocumentReferenceType, type: null, package_version: 1.0.1, class: unknown, kind: null, url: 'http://hl7.org/fhir/us/core/ValueSet/us-core-documentreference-type', version: 1.0.1}