{
  "resourceType": "StructureDefinition",
  "id": "ncdhc-observation-base",
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-category",
      "valueString": "Clinical.Diagnostics"
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-security-category",
      "valueCode": "patient"
    }
  ],
  "url": "http://build.fhir.org/ig/hl7au/au-fhir-childhealth/StructureDefinition/ncdhc-observation-base",
  "version": "current",
  "name": "NCDHCObservationBase",
  "title": "NCDHC Observation Base",
  "status": "active",
  "description": "This is the base profile for NCDHC Obsrevation. All NCDHC Observation profiles SHALL extend this profile (vital-sgins profiles are excluded)",
  "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": true,
  "type": "Observation",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Observation",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Observation",
        "path": "Observation",
        "constraint": [
          {
            "key": "dom-2",
            "severity": "error",
            "human": "If the resource is contained in another resource, it SHALL NOT contain nested Resources",
            "expression": "contained.contained.empty()",
            "xpath": "not(parent::f:contained and f:contained)",
            "source": "http://hl7.org/fhir/StructureDefinition/DomainResource"
          },
          {
            "key": "dom-3",
            "severity": "error",
            "human": "If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource",
            "expression": "contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()",
            "xpath": "not(exists(for $id in f:contained/*/f:id/@value return $contained[not(parent::*/descendant::f:reference/@value=concat('#', $contained/*/id/@value) or descendant::f:reference[@value='#'])]))",
            "source": "http://hl7.org/fhir/StructureDefinition/DomainResource"
          },
          {
            "key": "dom-4",
            "severity": "error",
            "human": "If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated",
            "expression": "contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()",
            "xpath": "not(exists(f:contained/*/f:meta/f:versionId)) and not(exists(f:contained/*/f:meta/f:lastUpdated))",
            "source": "http://hl7.org/fhir/StructureDefinition/DomainResource"
          },
          {
            "key": "dom-5",
            "severity": "error",
            "human": "If a resource is contained in another resource, it SHALL NOT have a security label",
            "expression": "contained.meta.security.empty()",
            "xpath": "not(exists(f:contained/*/f:meta/f:security))",
            "source": "http://hl7.org/fhir/StructureDefinition/DomainResource"
          },
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice",
                "valueBoolean": true
              },
              {
                "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice-explanation",
                "valueMarkdown": "When a resource has no narrative, only systems that fully understand the data can display the resource to a human safely. Including a human readable representation in the resource makes for a much more robust eco-system and cheaper handling of resources by intermediary systems. Some ecosystems restrict distribution of resources to only those systems that do fully understand the resources, and as a consequence implementers may believe that the narrative is superfluous. However experience shows that such eco-systems often open up to new participants over time."
              }
            ],
            "key": "dom-6",
            "severity": "warning",
            "human": "A resource should have narrative for robust management",
            "expression": "text.`div`.exists()",
            "xpath": "exists(f:text/h:div)",
            "source": "http://hl7.org/fhir/StructureDefinition/DomainResource"
          },
          {
            "key": "obs-6",
            "severity": "error",
            "human": "dataAbsentReason SHALL only be present if Observation.value[x] is not present",
            "expression": "dataAbsentReason.empty() or value.empty()",
            "xpath": "not(exists(f:dataAbsentReason)) or (not(exists(*[starts-with(local-name(.), 'value')])))"
          },
          {
            "key": "obs-7",
            "severity": "error",
            "human": "If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present",
            "expression": "value.empty() or component.code.where(coding.intersect(%resource.code.coding).exists()).empty()",
            "xpath": "not(f:*[starts-with(local-name(.), 'value')] and (for $coding in f:code/f:coding return f:component/f:code/f:coding[f:code/@value=$coding/f:code/@value] [f:system/@value=$coding/f:system/@value]))"
          },
          {
            "key": "ncdhc-obs-inv-001-val-ar",
            "severity": "error",
            "human": "If neither of component nor hasMember nor interpretation element is present, then either a value[x] or a data absent reason must be present",
            "expression": "component.exists() or interpretation.exists() or value.exists() or hasMember.exists() or dataAbsentReason.exists()",
            "source": "http://build.fhir.org/ig/hl7au/au-fhir-childhealth/StructureDefinition/ncdhc-observation-base"
          },
          {
            "key": "ncdhc-obs-inv-003-exm-org",
            "severity": "error",
            "human": "An organisation which captures the relevant details shall be present",
            "expression": "(dataAbsentReason.empty()) implies (performer.reference.resolve().where($this is Organization).exists())",
            "source": "http://build.fhir.org/ig/hl7au/au-fhir-childhealth/StructureDefinition/ncdhc-observation-base"
          },
          {
            "key": "ncdhc-obs-inv-002-exm-pract",
            "severity": "error",
            "human": "Person who is clinically responsible for the undertaking of the exam shall be present",
            "expression": "(dataAbsentReason.empty()) implies (performer.reference.resolve().where($this is PractitionerRole).exists())",
            "source": "http://build.fhir.org/ig/hl7au/au-fhir-childhealth/StructureDefinition/ncdhc-observation-base"
          }
        ]
      },
      {
        "id": "Observation.code.coding",
        "path": "Observation.code.coding",
        "slicing": {
          "discriminator": [
            {
              "type": "pattern",
              "path": "$this"
            }
          ],
          "rules": "open",
          "ordered": false,
          "description": "Slice based on the code.coding pattern"
        },
        "min": 1
      },
      {
        "id": "Observation.subject",
        "path": "Observation.subject",
        "min": 1,
        "type": [
          {
            "code": "Reference",
            "targetProfile": [
              "http://hl7.org.au/fhir/StructureDefinition/au-patient"
            ]
          }
        ]
      },
      {
        "id": "Observation.effective[x]",
        "path": "Observation.effective[x]",
        "min": 1
      },
      {
        "id": "Observation.performer",
        "path": "Observation.performer",
        "slicing": {
          "discriminator": [
            {
              "type": "type",
              "path": "$this.resolve()"
            }
          ],
          "rules": "open",
          "ordered": false,
          "description": "Slice based on type:$this.resolve()"
        },
        "type": [
          {
            "code": "Reference",
            "targetProfile": [
              "http://hl7.org.au/fhir/StructureDefinition/au-organization",
              "http://hl7.org.au/fhir/StructureDefinition/au-practitionerrole",
              "http://hl7.org.au/fhir/StructureDefinition/au-patient",
              "http://hl7.org.au/fhir/StructureDefinition/au-practitioner"
            ]
          }
        ]
      },
      {
        "id": "Observation.performer:examiner",
        "path": "Observation.performer",
        "sliceName": "examiner",
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "Reference",
            "targetProfile": [
              "http://build.fhir.org/ig/hl7au/au-fhir-childhealth/StructureDefinition/ncdhc-practitioner-role"
            ]
          }
        ]
      },
      {
        "id": "Observation.performer:legalOrg",
        "path": "Observation.performer",
        "sliceName": "legalOrg",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "Reference",
            "targetProfile": [
              "http://build.fhir.org/ig/hl7au/au-fhir-childhealth/StructureDefinition/ncdhc-organisation"
            ]
          }
        ]
      },
      {
        "id": "Observation.dataAbsentReason",
        "path": "Observation.dataAbsentReason",
        "binding": {
          "strength": "extensible",
          "valueSet": "http://build.fhir.org/ig/hl7au/au-fhir-childhealth/ValueSet/ncdhc-observation-data-absent-reason-1"
        }
      }
    ]
  }
}