{
  "resourceType": "StructureDefinition",
  "id": "ca-on-phsd-ext-contact-purpose",
  "url": "https://ontariohealth.ca/fhir/StructureDefinition/ca-on-phsd-ext-contact-purpose",
  "name": "ContactPurpose",
  "status": "draft",
  "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.",
  "fhirVersion": "4.0.1",
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "type": "element",
      "expression": "ContactPoint"
    }
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "fixedUri": "https://ontariohealth.ca/fhir/StructureDefinition/ca-on-phsd-ext-purpose"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "min": 1,
        "type": [
          {
            "code": "Coding"
          }
        ],
        "mustSupport": true,
        "binding": {
          "strength": "required",
          "description": "purpose of contact point such as phone number, email, fax, etc",
          "valueSet": "http://ontariohealth.ca/fhir/ValueSet/phsd-contact-point-purpose"
        }
      },
      {
        "id": "Extension.value[x].system",
        "path": "Extension.value[x].system",
        "min": 1,
        "mustSupport": true
      },
      {
        "id": "Extension.value[x].code",
        "path": "Extension.value[x].code",
        "min": 1,
        "mustSupport": true
      },
      {
        "id": "Extension.value[x].display",
        "path": "Extension.value[x].display",
        "min": 1,
        "mustSupport": true
      }
    ]
  }
}