This is the CodeSystem that contains all the codes in Digital Media Category (http://terminology.hl7.org/CodeSystem/media-category) and Digital Media Category (http://terminology.hl7.org/CodeSystem/media-category). E.g. what you have to deal with if you get resources containing codes in either of them
Generated Narrative: CodeSystem 79ef1cfb-ecb3-468a-b7e1-93fd79025b05-1301
This code system http://hl7.org/fhir/comparison/CodeSystem/79ef1cfb-ecb3-468a-b7e1-93fd79025b05-1301
defines codes, but no codes are represented here