{
  "description": "Observation profile for CDR (Clinical Data Repository) with additional extensions and constraints",
  "_filename": "cdr-observation.json",
  "package_name": "dot.cdr-implementation-guide",
  "date": null,
  "derivation": "constraint",
  "publisher": "CDR Team",
  "fhirVersion": "4.0.1",
  "name": "CDRObservation",
  "abstract": false,
  "type": "Observation",
  "experimental": "true",
  "resourceType": "StructureDefinition",
  "title": "CDR Observation Profile",
  "package_version": "1.0.0",
  "status": "draft",
  "id": "b7b5ef0b-e301-4882-903a-b65939cbe63e",
  "kind": "resource",
  "url": "http://example.org/fhir/ImplementationGuide/hl7.fhir.cdr/StructureDefinition/cdr-observation",
  "version": "1.0.0",
  "differential": {
    "element": [ {
      "id": "Observation.extension",
      "path": "Observation.extension",
      "slicing": {
        "rules": "open",
        "ordered": false,
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      }
    }, {
      "id": "Observation.extension:confidence",
      "max": "1",
      "min": 0,
      "path": "Observation.extension",
      "type": [ {
        "code": "Extension",
        "profile": [ "http://example.org/fhir/ImplementationGuide/hl7.fhir.cdr/StructureDefinition/cdr-observation-confidence" ]
      } ],
      "short": "Observation confidence level",
      "sliceName": "confidence",
      "definition": "Indicates the confidence level in the accuracy of this observation"
    }, {
      "id": "Observation.extension:source",
      "max": "1",
      "min": 0,
      "path": "Observation.extension",
      "type": [ {
        "code": "Extension",
        "profile": [ "http://example.org/fhir/ImplementationGuide/hl7.fhir.cdr/StructureDefinition/cdr-observation-source" ]
      } ],
      "short": "Observation source",
      "sliceName": "source",
      "definition": "Indicates the source system that provided this observation"
    }, {
      "id": "Observation.status",
      "path": "Observation.status",
      "short": "Observation status",
      "definition": "The status of the result value"
    }, {
      "id": "Observation.code",
      "path": "Observation.code",
      "short": "Observation code",
      "constraint": [ {
        "key": "cdr-observation-code-invariant",
        "human": "Observation code must have a coding with a system and code",
        "source": "http://example.org/fhir/ImplementationGuide/hl7.fhir.cdr/StructureDefinition/cdr-observation",
        "severity": "error",
        "expression": "code.coding.all(system.exists() and code.exists())"
      } ],
      "definition": "Describes what was observed"
    }, {
      "id": "Observation.subject",
      "min": 1,
      "path": "Observation.subject",
      "short": "Observation subject",
      "definition": "The patient, or group of patients, location, or device this observation is about"
    }, {
      "id": "Observation.effective[x]",
      "min": 1,
      "path": "Observation.effective[x]",
      "short": "Observation effective date/time",
      "constraint": [ {
        "key": "cdr-observation-effective-invariant",
        "human": "Observation effective date/time must not be in the future",
        "source": "http://example.org/fhir/ImplementationGuide/hl7.fhir.cdr/StructureDefinition/cdr-observation",
        "severity": "warning",
        "expression": "effective.ofType(dateTime) <= now() or effective.ofType(Period).start <= now()"
      } ],
      "definition": "The time or time-period the observed value is asserted as being true"
    }, {
      "id": "Observation.issued",
      "path": "Observation.issued",
      "short": "Observation issued date/time",
      "definition": "The date and time this version of the observation was made available to providers"
    }, {
      "id": "Observation.performer",
      "path": "Observation.performer",
      "short": "Observation performer",
      "definition": "Who was responsible for asserting the observed value"
    }, {
      "id": "Observation.value[x]",
      "path": "Observation.value[x]",
      "short": "Observation value",
      "definition": "The information determined as a result of making the observation"
    }, {
      "id": "Observation.dataAbsentReason",
      "path": "Observation.dataAbsentReason",
      "short": "Data absent reason",
      "definition": "Provides a reason why the expected value in the element Observation.value[x] is missing"
    }, {
      "id": "Observation.referenceRange",
      "path": "Observation.referenceRange",
      "short": "Observation reference range",
      "definition": "Guidance on how to interpret the value by comparison to a normal or recommended range"
    } ]
  },
  "contact": [ {
    "name": "CDR Team",
    "telecom": [ {
      "value": "cdr-team@example.com",
      "system": "email"
    } ]
  } ],
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Observation"
}