description: Add a reference from the ObservationDefinition to the Device.
package_name: hl7.fhir.uv.livd
derivation: constraint
name: LIVDDevice
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/uv/livd/StructureDefinition/ext-device'}
    index: 1
  value:
    choices: []
    index: 3
    slicing:
      rules: open
      ordered: false
      discriminator:
      - {path: $this, type: type}
      min: 1
      slices:
        valueReference:
          match: {}
          schema:
            choices: [valueReference]
            _required: true
            index: 5
          min: 1
          max: 1
  valueReference:
    type: Reference
    choiceOf: value
    refers: ['http://hl7.org/fhir/uv/livd/StructureDefinition/devicedefinition-uv-livd']
    index: 6
    slicing:
      slices:
        valueReference:
          match: {}
          schema:
            type: Reference
            choiceOf: value
            refers: ['http://hl7.org/fhir/uv/livd/StructureDefinition/devicedefinition-uv-livd']
            _required: true
            index: 6
          min: 1
          max: 1
package_version: 1.0.0-ballot
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/uv/livd/StructureDefinition/ext-device
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 1.0.0-ballot
required: [valueReference, value]