{
  "description": "Indicates the laterality of the body structure. Only for use when laterality is needed to augment the Observation.bodySite in cases where the laterality is not expressed in the Observation.code and/or the use of BodyStructure will duplicate information for the anatomical structure. This extension is used with Observation.bodySite through FHIR R5. In FHIR R6 and later, the bodySite element is deprecated and replaced with the bodyStructure element with reference to BodyStructure, so this extension is no longer required.",
  "_filename": "StructureDefinition-observation-structureLaterality.json",
  "package_name": "hl7.fhir.uv.extensions.r3",
  "date": "2025-07-25",
  "derivation": "constraint",
  "publisher": "HL7 International / Orders and Observations",
  "fhirVersion": "3.0.2",
  "jurisdiction": [ {
    "coding": [ {
      "code": "001",
      "system": "http://unstats.un.org/unsd/methods/m49/m49.htm"
    } ]
  } ],
  "name": "StructureLaterality",
  "mapping": [ {
    "uri": "http://hl7.org/v3",
    "name": "RIM Mapping",
    "identity": "rim"
  } ],
  "abstract": false,
  "type": "Extension",
  "experimental": "false",
  "resourceType": "StructureDefinition",
  "title": "Observation Structure Laterality",
  "package_version": "5.4.0",
  "extension": [ {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode": "oo"
  }, {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
    "valueInteger": 1
  }, {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
    "valueCode": "trial-use"
  }, {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-type-characteristics",
    "valueCode": "can-bind"
  } ],
  "snapshot": {
    "element": [ {
      "constraint": [ {
        "key": "ele-1",
        "human": "All FHIR elements must have a @value or children",
        "xpath": "@value|f:*|h:div",
        "source": "http://hl7.org/fhir/StructureDefinition/Element",
        "severity": "error",
        "expression": "hasValue() | (children().count() > id.count())"
      }, {
        "key": "ext-1",
        "human": "Must have either extensions or value[x], not both",
        "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])",
        "source": "http://hl7.org/fhir/StructureDefinition/Extension",
        "severity": "error",
        "expression": "extension.exists() != value.exists()"
      } ],
      "path": "Extension",
      "min": 0,
      "definition": "Indicates the laterality of the body structure. Only for use when laterality is needed to augment the Observation.bodySite in cases where the laterality is not expressed in the Observation.code and/or the use of BodyStructure will duplicate information for the anatomical structure. This extension is available for use with Observation.bodySite through FHIR R5. In FHIR R6 and later, Observation.bodySite is deprecated; use Observation.bodyStructure instead, which supports a CodeableReference to BodyStructure.",
      "short": "Laterality of the body structure",
      "max": "1",
      "id": "Extension",
      "condition": [ "ele-1" ],
      "base": {
        "max": "*",
        "min": 0,
        "path": "Extension"
      }
    }, {
      "path": "Extension.id",
      "min": 0,
      "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
      "short": "xml:id (or equivalent in JSON)",
      "mapping": [ {
        "map": "n/a",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "string"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.id",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Element.id"
      }
    }, {
      "path": "Extension.extension",
      "min": 0,
      "definition": "An Extension",
      "short": "Extension",
      "slicing": {
        "rules": "open",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      },
      "type": [ {
        "code": "Extension"
      } ],
      "max": "0",
      "id": "Extension.extension",
      "base": {
        "max": "*",
        "min": 0,
        "path": "Element.extension"
      }
    }, {
      "path": "Extension.url",
      "min": 1,
      "definition": "Source of the definition for the extension code - a logical name or a URL.",
      "short": "identifies the meaning of the extension",
      "fixedUri": "http://hl7.org/fhir/StructureDefinition/observation-structureLaterality",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "uri"
      } ],
      "representation": [ "xmlAttr" ],
      "max": "1",
      "id": "Extension.url",
      "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
      "base": {
        "max": "1",
        "min": 1,
        "path": "Extension.url"
      }
    }, {
      "path": "Extension.value[x]",
      "min": 1,
      "definition": "Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).",
      "short": "Value of extension",
      "mapping": [ {
        "map": "N/A",
        "identity": "rim"
      } ],
      "type": [ {
        "code": "CodeableConcept"
      } ],
      "binding": {
        "strength": "extensible",
        "valueSetReference": {
          "reference": "http://hl7.org/fhir/ValueSet/structure-laterality-vs"
        }
      },
      "max": "1",
      "id": "Extension.value[x]",
      "base": {
        "max": "1",
        "min": 0,
        "path": "Extension.value[x]"
      }
    } ]
  },
  "status": "active",
  "id": "394b7c9f-b1ad-4799-b876-2b123d47e41e",
  "kind": "complex-type",
  "url": "http://hl7.org/fhir/StructureDefinition/observation-structureLaterality",
  "identifier": [ {
    "value": "urn:oid:2.16.840.1.113883.4.642.40.97.42.53",
    "system": "urn:ietf:rfc:3986"
  } ],
  "context": [ "Observation.bodySite" ],
  "version": "5.4.0",
  "differential": {
    "element": [ {
      "id": "Extension",
      "max": "1",
      "min": 0,
      "path": "Extension",
      "short": "Laterality of the body structure",
      "definition": "Indicates the laterality of the body structure. Only for use when laterality is needed to augment the Observation.bodySite in cases where the laterality is not expressed in the Observation.code and/or the use of BodyStructure will duplicate information for the anatomical structure. This extension is available for use with Observation.bodySite through FHIR R5. In FHIR R6 and later, Observation.bodySite is deprecated; use Observation.bodyStructure instead, which supports a CodeableReference to BodyStructure."
    }, {
      "id": "Extension.extension",
      "max": "0",
      "path": "Extension.extension"
    }, {
      "id": "Extension.url",
      "path": "Extension.url",
      "fixedUri": "http://hl7.org/fhir/StructureDefinition/observation-structureLaterality"
    }, {
      "id": "Extension.value[x]",
      "min": 1,
      "path": "Extension.value[x]",
      "type": [ {
        "code": "CodeableConcept"
      } ],
      "binding": {
        "strength": "extensible",
        "valueSetReference": {
          "reference": "http://hl7.org/fhir/ValueSet/structure-laterality-vs"
        }
      }
    } ]
  },
  "contact": [ {
    "telecom": [ {
      "value": "http://www.hl7.org/Special/committees/orders",
      "system": "url"
    } ]
  } ],
  "contextType": "resource",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension"
}