{
  "resourceType": "StructureDefinition",
  "id": "profile-observation-smokingstatus",
  "url": "http://ontariohealth.ca/fhir/ocre/StructureDefinition/profile-observation-smokingstatus",
  "version": "1.0.0-Ballot",
  "name": "ObservationSmokingStatusOCRE",
  "title": "Experimental Smoking Status Observation Profile",
  "status": "active",
  "description": "Smoking Status Observation Profile inherits from the FHIR [Observation](https://hl7.org/fhir/R4/observation.html) resource; refer to it for scope and usage definitions. This profile meets the requirements of the U.S. Core Data for Interoperability (USCDI)  *Smoking Status* Data Element. This profile sets minimum expectations for the Observation resource to record, search, and fetch smoking status data associated with a patient. It specifies which core elements, extensions,  vocabularies, and value sets **SHALL** be present in the resource and constrains how the elements are used. Providing the floor for standards development for specific use cases promotes interoperability and adoption.",
  "fhirVersion": "4.0.1",
  "kind": "resource",
  "abstract": false,
  "type": "Observation",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Observation",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Observation.status",
        "path": "Observation.status",
        "short": "final | entered-in-error",
        "mustSupport": true
      },
      {
        "id": "Observation.category",
        "path": "Observation.category",
        "slicing": {
          "discriminator": [
            {
              "type": "pattern",
              "path": "$this"
            }
          ],
          "rules": "open"
        },
        "min": 1,
        "mustSupport": true
      },
      {
        "id": "Observation.category:SocialHistory",
        "path": "Observation.category",
        "sliceName": "SocialHistory",
        "min": 1,
        "max": "1",
        "patternCodeableConcept": {
          "coding": [
            {
              "code": "social-history",
              "system": "http://terminology.hl7.org/CodeSystem/observation-category",
              "display": "Social History"
            }
          ]
        },
        "mustSupport": true
      },
      {
        "id": "Observation.code",
        "path": "Observation.code",
        "short": "Smoking Status",
        "patternCodeableConcept": {
          "coding": [
            {
              "code": "72166-2",
              "system": "http://loinc.org",
              "display": "Tobacco smoking status"
            }
          ]
        },
        "mustSupport": true,
        "binding": {
          "strength": "required",
          "valueSet": "http://hl7.org/fhir/ValueSet/observation-codes"
        }
      },
      {
        "id": "Observation.subject",
        "path": "Observation.subject",
        "min": 1,
        "type": [
          {
            "code": "Reference",
            "targetProfile": [
              "http://ontariohealth.ca/fhir/ehr/StructureDefinition/profile-patient"
            ]
          }
        ],
        "mustSupport": true
      },
      {
        "id": "Observation.effective[x]",
        "path": "Observation.effective[x]",
        "min": 1,
        "type": [
          {
            "code": "dateTime"
          },
          {
            "code": "Period"
          }
        ],
        "mustSupport": true
      },
      {
        "id": "Observation.value[x]",
        "path": "Observation.value[x]",
        "slicing": {
          "discriminator": [
            {
              "type": "type",
              "path": "$this"
            }
          ],
          "rules": "open"
        },
        "min": 1,
        "type": [
          {
            "code": "Quantity"
          },
          {
            "code": "CodeableConcept"
          }
        ],
        "mustSupport": true
      },
      {
        "id": "Observation.value[x]:valueQuantity",
        "path": "Observation.value[x]",
        "sliceName": "valueQuantity",
        "short": "Quantitative Response",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "Quantity"
          }
        ],
        "mustSupport": true,
        "binding": {
          "strength": "required",
          "valueSet": "http://terminology.hl7.org/ValueSet/v3-UnitsOfMeasureCaseSensitive"
        }
      },
      {
        "id": "Observation.value[x]:valueCodeableConcept",
        "path": "Observation.value[x]",
        "sliceName": "valueCodeableConcept",
        "short": "Coded Response",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "mustSupport": true,
        "binding": {
          "strength": "extensible",
          "valueSet": "http://ontariohealth.ca/fhir/ocre/ValueSet/current-smoking-status",
          "description": "Smoking status comprehensive"
        }
      }
    ]
  }
}