description: Used to capture additional information about a telecom (or other contact type) contact entry, such as its usage as an after-hours line or crisis line, or denoting a toll-free number. FHIR R6 captures a similar concept in ExtendedContactDetail.purpose.
package_name: ca.on.phsd.r4
derivation: constraint
name: ContactPurpose
type: Extension
elements:
  url:
    pattern: {type: Uri, value: 'https://ontariohealth.ca/fhir/StructureDefinition/ca-on-phsd-ext-purpose'}
    index: 0
  value:
    choices: [valueString]
    index: 2
  valueString: {type: string, choiceOf: value, index: 3}
package_version: alpha-0.1.0
class: extension
kind: complex-type
url: https://ontariohealth.ca/fhir/StructureDefinition/ca-on-phsd-ext-contact-purpose
base: http://hl7.org/fhir/StructureDefinition/Extension
version: null