This is the CodeSystem that contains all the codes in CommunicationNotDoneReason (http://terminology.hl7.org/CodeSystem/communication-not-done-reason) and CommunicationNotDoneReason (http://terminology.hl7.org/CodeSystem/communication-not-done-reason). E.g. what you have to deal with if you get resources containing codes in either of them
Generated Narrative: CodeSystem 2023f8dc-2ca7-4cc8-b1b8-b801585b8ec6-743
This code system http://hl7.org/fhir/comparison/CodeSystem/2023f8dc-2ca7-4cc8-b1b8-b801585b8ec6-743
defines codes, but no codes are represented here