description: This extension contains an explanation for the manual or alternate initiation of the public health report.\n\nIf there are multiple distinct reasons for manual or alternate initiation then each reason should be contained in a separate US Public Health Initiation Reason Extension. \n\nThe reason may be entered either as:\n* free text (string) \n* coded value (valueCodeableConcept) (not necessarily initiated by a provider of care but might be \"programmed-in\" by the EHR implementer for some purpose) package_name: rs/hl7.fhir.us.ph derivation: constraint name: USPublicHealthInitiationReasonExtension type: Extension elements: url: pattern: {type: uri, value: 'http://hl7.org/fhir/us/ph-library/StructureDefinition/us-ph-initiation-reason-extension'} type: uri index: 0 value: mustSupport: true choices: [valueString, valueCodeableConcept] index: 2 valueString: {type: string, mustSupport: true, choiceOf: value, index: 3} valueCodeableConcept: {type: CodeableConcept, mustSupport: true, choiceOf: value, index: 4} package_version: library-1.0.0-ballot class: extension kind: complex-type url: http://hl7.org/fhir/us/ph-library/StructureDefinition/us-ph-initiation-reason-extension base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0-ballot required: [value, valueCodeableConcept, valueString]