{description: Value Set of codes that further describe an observation definition that is characterized as a challenge observation., package_name: hl7.terminology, name: Hl7VSNatureOfChallenge, type: null, package_version: 7.1.0, class: unknown, kind: null, url: 'http://terminology.hl7.org/ValueSet/v2-0257', version: 3.0.0}