{description: 'The severity of the adverse event itself, in direct relation to the subject.', package_name: hl7.terminology.r4b, name: AdverseEventSeverity, type: null, package_version: 6.0.0, class: unknown, kind: null, url: 'http://terminology.hl7.org/CodeSystem/adverse-event-severity', version: 1.0.0}