description: This Extension profile represents an external resource (DocumentReference) pertaining to the condition such as a text guidance, link to access forms for additional reporting needs, additional testing and/or laboratory testing needs, treatment and/or prevention resources, Public Health Agency contact information and general additional resources.
package_name: hl7.fhir.us.ecr
derivation: constraint
name: RRExternalResourceExtension
type: Extension
elements:
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/us/ecr/StructureDefinition/rr-external-resource-extension'}
    index: 0
  value:
    short: DocumentReference for an external resource
    choices: [valueReference]
    index: 2
  valueReference:
    type: Reference
    short: DocumentReference for an external resource
    choiceOf: value
    refers: ['http://hl7.org/fhir/us/ecr/StructureDefinition/rr-documentreference']
    index: 3
package_version: 2.1.2
class: extension
kind: complex-type
url: http://hl7.org/fhir/us/ecr/StructureDefinition/rr-external-resource-extension
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 2.1.2
required: [valueReference, value]