This is the CodeSystem that contains codes in both FamilyHistoryAbsentReason (http://terminology.hl7.org/CodeSystem/history-absent-reason) and FamilyHistoryAbsentReason (http://terminology.hl7.org/CodeSystem/history-absent-reason).
Generated Narrative: CodeSystem 974a4042-5ef9-4d87-bcaa-92de671fa085-471
This code system http://hl7.org/fhir/comparison/CodeSystem/974a4042-5ef9-4d87-bcaa-92de671fa085-471 defines codes, but no codes are represented here