{
  "resourceType": "StructureDefinition",
  "id": "profile-observation",
  "url": "http://hl7.org/fhir/ca/baseline/StructureDefinition/profile-observation",
  "version": "1.0.2",
  "name": "ObservationProfile",
  "title": "Observation Profile (General Use)",
  "status": "draft",
  "date": "2026-01-09",
  "publisher": "HL7 Canada - FHIR Implementation Work Group",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "https://infocentral.infoway-inforoute.ca/en/collaboration/wg/fhir-implementations"
        }
      ]
    }
  ],
  "description": "Proposed constraints on the Observation Resource for general use. This profile sets minimum expectations for the Observation resource to represent various observations if no other, more specific profile is applicable. An observation is a measurement or assertion about a subject (person, group, device, location, or another subject).",
  "jurisdiction": [
    {
      "coding": [
        {
          "system": "urn:iso:std:iso:3166",
          "code": "CA"
        }
      ]
    }
  ],
  "fhirVersion": "4.0.1",
  "mapping": [
    {
      "identity": "workflow",
      "uri": "http://hl7.org/fhir/workflow",
      "name": "Workflow Pattern"
    },
    {
      "identity": "sct-concept",
      "uri": "http://snomed.info/conceptdomain",
      "name": "SNOMED CT Concept Domain Binding"
    },
    {
      "identity": "v2",
      "uri": "http://hl7.org/v2",
      "name": "HL7 v2 Mapping"
    },
    {
      "identity": "rim",
      "uri": "http://hl7.org/v3",
      "name": "RIM Mapping"
    },
    {
      "identity": "w5",
      "uri": "http://hl7.org/fhir/fivews",
      "name": "FiveWs Pattern Mapping"
    },
    {
      "identity": "sct-attr",
      "uri": "http://snomed.org/attributebinding",
      "name": "SNOMED CT Attribute Binding"
    }
  ],
  "kind": "resource",
  "abstract": false,
  "type": "Observation",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Observation",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Observation",
        "path": "Observation",
        "short": "Observation Profile",
        "definition": "The Observation Profile is based upon the core FHIR Observation Resource"
      },
      {
        "id": "Observation.status",
        "path": "Observation.status"
      },
      {
        "id": "Observation.code",
        "path": "Observation.code",
        "comment": "The binding strength of this element is [Preferred](https://www.hl7.org/fhir/terminologies.html#strength), meaning that codes are encouraged to draw from the LOINC code system for interoperability purposes but are not required to do so to be considered conformant. *All* code-value and, if present, component.code-component.value pairs need to be taken into account to correctly understand the meaning of the observation.",
        "binding": {
          "strength": "preferred",
          "description": "LOINC codes identifying names of simple observations.",
          "valueSet": "http://hl7.org/fhir/ValueSet/observation-codes"
        }
      },
      {
        "id": "Observation.subject",
        "path": "Observation.subject",
        "min": 1,
        "type": [
          {
            "code": "Reference",
            "targetProfile": [
              "http://hl7.org/fhir/ca/baseline/StructureDefinition/profile-patient",
              "http://hl7.org/fhir/StructureDefinition/Group",
              "http://hl7.org/fhir/StructureDefinition/Device",
              "http://hl7.org/fhir/StructureDefinition/Location"
            ]
          }
        ]
      },
      {
        "id": "Observation.effective[x]",
        "path": "Observation.effective[x]",
        "type": [
          {
            "code": "dateTime"
          },
          {
            "code": "Period"
          }
        ]
      },
      {
        "id": "Observation.dataAbsentReason",
        "path": "Observation.dataAbsentReason",
        "comment": "This element is recommended for support and was initially flagged as must support but was later determined to be too strong for some types of observation profiles that want to derive from the CA Baseline but do not need a dataAbsentReason concept"
      },
      {
        "id": "Observation.component",
        "path": "Observation.component",
        "comment": "Some elements underneath this backbone element are considered must support. This does not incur the expectation to support these elements for any implementers that do not need to support the parent concept of observation.component. This may need to be evaluated in the future as impelementations seek to derive directly from the CA Baseline profiles"
      },
      {
        "id": "Observation.component.code",
        "path": "Observation.component.code",
        "comment": "The binding strength of this element is [Preferred](https://www.hl7.org/fhir/terminologies.html#strength), meaning that codes are encouraged to draw from the LOINC code system for interoperability purposes but are not required to do so to be considered conformant. *All* code-value and, if present, component.code-component.value pairs need to be taken into account to correctly understand the meaning of the observation.",
        "binding": {
          "strength": "preferred",
          "description": "LOINC codes identifying names of simple observations.",
          "valueSet": "http://hl7.org/fhir/ValueSet/observation-codes"
        }
      }
    ]
  }
}