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 20bc3134-ebe2-4c64-81ac-614a70124787-570
This code system http://hl7.org/fhir/comparison/CodeSystem/20bc3134-ebe2-4c64-81ac-614a70124787-570
defines codes, but no codes are represented here