This is the CodeSystem that contains all the codes in Cited Artifact Classification Type (http://terminology.hl7.org/CodeSystem/cited-artifact-classification-type) and Cited Artifact Classification Type (http://terminology.hl7.org/CodeSystem/cited-artifact-classification-type). E.g. what you have to deal with if you get resources containing codes in either of them
Generated Narrative: CodeSystem 771597bc-b33b-4259-8d70-99e2807bce11-164
This code system http://hl7.org/fhir/comparison/CodeSystem/771597bc-b33b-4259-8d70-99e2807bce11-164 defines codes, but no codes are represented here