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 315e1367-3f8c-499a-bde0-f49d698cf03c-471
This code system http://hl7.org/fhir/comparison/CodeSystem/315e1367-3f8c-499a-bde0-f49d698cf03c-471 defines codes, but no codes are represented here