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 209ef897-e0c1-42aa-924c-4a2591583ab9-549
This code system http://hl7.org/fhir/comparison/CodeSystem/209ef897-e0c1-42aa-924c-4a2591583ab9-549 defines codes, but no codes are represented here