{
"description": "The relationship between a landmark that helps determine a body location and the body location itself. The location relative to a landmark is specified by:\\n* Specifying the location and type of landmark using a body site code and optional laterality/orientation,\\n* Specifying the direction from the landmark to the body location, and\\n* Specifying the distance from the landmark to the body location.\\n\\nThe RelationToLandmark element is part of BodyLocation, a flexible structure that allows the location to be determined by a single code, or a code plus laterality and/or orientation. The body location can also be specified in relation to one or more body landmarks. SNOMED CT is used in all cases.\\n\\n* Code only: The code should include (precoordinate) laterality and/orientation to the degree necessary to completely specify the body location.\\n* Code plus laterality and/or orientation: The basic code augmented by codes specifying the body side and/or anatomical orientation.\\n* Relation to landmark: The location relative to a landmark is specified by:\\n1. Establishing the location and type of landmark using a body site code and optional laterality/orientation, and\\n2. Specifying the direction and distance from the landmark to the body location.\\n\\nNote that BodyLocation is a data type (a reusable structure), not a stand-alone entity. The concept is similar to how a postal address can apply to a person, location, or organization. This contrasts with FHIR's stand-alone BodySite (aka BodyStructure in r4) which 'is not ... intended for describing the type of anatomical location but rather a specific body site on a specific patient' (FHIR 3.5).",
"_filename": "StructureDefinition-obf-datatype-RelationToLandmark-extension.json",
"package_name": "hl7.fhir.us.mcode",
"date": "2019-08-01T00:00:00-04:00",
"derivation": "constraint",
"publisher": "HL7 International Clinical Interoperability Council",
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"name": "RelationToLandmark",
"abstract": false,
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