This is the CodeSystem that contains codes in both AdverseEventSeriousness (http://terminology.hl7.org/CodeSystem/adverse-event-seriousness) and AdverseEventSeriousness (http://terminology.hl7.org/CodeSystem/adverse-event-seriousness).
Generated Narrative: CodeSystem 79ef1cfb-ecb3-468a-b7e1-93fd79025b05-573
This code system http://hl7.org/fhir/comparison/CodeSystem/79ef1cfb-ecb3-468a-b7e1-93fd79025b05-573
defines codes, but no codes are represented here