This is the CodeSystem that contains all the codes in Id Expectation Codes (http://hl7.org/fhir/tools/CodeSystem/id-expectation) and Id Expectation Codes (http://hl7.org/fhir/tools/CodeSystem/id-expectation). E.g. what you have to deal with if you get resources containing codes in either of them
Generated Narrative: CodeSystem c191d980-e903-4276-a2f3-200a423c1946-23
This code system http://hl7.org/fhir/comparison/CodeSystem/c191d980-e903-4276-a2f3-200a423c1946-23
defines codes, but no codes are represented here