This is the CodeSystem that contains all the codes in FamilyHistoryAbsentReason (http://terminology.hl7.org/CodeSystem/history-absent-reason) and FamilyHistoryAbsentReason (http://terminology.hl7.org/CodeSystem/history-absent-reason). E.g. what you have to deal with if you get resources containing codes in either of them
Generated Narrative: CodeSystem 2c77c26f-0eba-4543-89eb-09eda3cba01c-1061
This code system http://hl7.org/fhir/comparison/CodeSystem/2c77c26f-0eba-4543-89eb-09eda3cba01c-1061
defines codes, but no codes are represented here