This is the CodeSystem that contains all the codes in HL7 EU Document Types (http://hl7.eu/fhir/imaging-r5/CodeSystem/Hl7EuDocumentTypes) and HL7 EU Document Types (http://hl7.eu/fhir/imaging-r5/CodeSystem/Hl7EuDocumentTypes). E.g. what you have to deal with if you get resources containing codes in either of them
Generated Narrative: CodeSystem 121f850f-2126-4e64-9ff3-1065e335b96c-2
This code system http://hl7.org/fhir/comparison/CodeSystem/121f850f-2126-4e64-9ff3-1065e335b96c-2
defines codes in an undefined hierarchy, but no codes are represented here