This page is part of the Breast Radiology Report (v0.1.0: Comment Draft) based on FHIR R4. . For a full list of available versions, see the Directory of published versions

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Laterality

 

The official URL for this extension is:

http://hl7.org/fhir/us/breast-radiology/StructureDefinition/obf-datatype-Laterality-extension

Body side of the body location, if needed to distinguish from a similar location on the other side of the body.

The laterality 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.

• Code only: The code should include (precoordinate) laterality and/orientation to the degree necessary to completely specify the body location.
• Code plus laterality and/or orientation: The basic code augmented by codes specifying the body side and/or anatomical orientation.
• Relation to landmark: The location relative to a landmark is specified by:
  1. Establishing the location and type of landmark using a body site code and optional laterality/orientation, and
  2. Specifying the direction and distance from the landmark to the body location.

Note 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).

This extension was published on Fri Aug 02 00:00:00 EDT 2019 as a draft by Hl7 - Clinical Interoperability Council.

Downloads: StructureDefinition: (XML, JSON, TTL), Schema: XML Schematron

 

Terminology Bindings

Path	Conformance	ValueSet
Extension.valueCodeableConcept	extensible	Laterality

 

Constraints

Id	Path	Details	Requirements
ele-1	Extension	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
ext-1	Extension	Must have either extensions or value[x], not both : extension.exists() != value.exists()

 

Usage

This extension is used in the following profiles:

• BreastAbnormality (on bodySite)
• BreastAbnormality (on bodySite.extension.extension)
• Condition (on bodySite)
• Observation (on bodySite)
• Procedure (on bodySite)

This extension is used in the following complex extensions:

• LandmarkLocation