description: 'The context for this extension is Communication.payload or CommunicationRequest.payload. '
package_name: hl7.fhir.us.davinci-cdex
derivation: constraint
name: CDexPayloadQueryString
type: Extension
elements:
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/us/davinci-cdex/StructureDefinition/cdex-payload-query-string'}
    index: 0
  value:
    choices: [valueString]
    index: 2
  valueString: {type: string, choiceOf: value, index: 3}
package_version: 0.1.0
class: extension
kind: complex-type
url: http://hl7.org/fhir/us/davinci-cdex/StructureDefinition/cdex-payload-query-string
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 0.1.0
required: [valueString, value]