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 c51c7c25-f5f4-429e-b1c8-849e59890f2d-570
This code system http://hl7.org/fhir/comparison/CodeSystem/c51c7c25-f5f4-429e-b1c8-849e59890f2d-570 defines codes, but no codes are represented here