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 83f9c334-408b-426f-aa51-2c674a5c7b60-48
This code system http://hl7.org/fhir/comparison/CodeSystem/83f9c334-408b-426f-aa51-2c674a5c7b60-48 defines codes, but no codes are represented here