HL7 FHIR Implementation Guide: Transversal Clinical Core
1.0.1 - STU1

HL7 FHIR Implementation Guide: Transversal Clinical Core, published by eHealth Platform. This guide is not an authorized publication; it is the continuous build for version 1.0.1 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/hl7-be/core-clinical/ and changes regularly. See the Directory of published versions

## Extension: BeExtLaterality

Official URL: https://www.ehealth.fgov.be/standards/fhir/core-clinical/StructureDefinition/be-ext-laterality | Version: 1.0.1
Active as of 2025-10-16 | Maturity Level: 1 | Computable Name: BeExtLaterality

An explicit statement of laterality of a lesion, or a treatment, etc.

Context of Use

This extension may be used on the following element(s)

- Element ID: `Claim.item.bodySite`
- Element ID: `Condition.bodySite`
- Element ID: `Immunization.site`
- Element ID: `Observation.bodySite`
- Element ID: `ServiceRequest.bodySite`

Usage info

Usages:

- Use this Extension: BeProblem and BeScoreResult

You can also check for usages in the FHIR IG Statistics

### Formal Views of Extension Content

Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work.

- Differential Table
- Snapshot Table
- Statistics/References
- All

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | BeExtLaterality
extension |  | 0..0 |  |
url |  | 1..1 | uri | "https://www.ehealth.fgov.be/standards/fhir/core-clinical/StructureDefinition/be-ext-laterality"
value[x] |  | 0..1 | Coding | Value of extension Binding: Laterality (required)
Documentation for this format

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | BeExtLaterality
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..0 |  |
url |  | 1..1 | uri | "https://www.ehealth.fgov.be/standards/fhir/core-clinical/StructureDefinition/be-ext-laterality"
value[x] |  | 0..1 | Coding | Value of extension Binding: Laterality (required)
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type Coding: An explicit statement of laterality of a lesion, or a treatment, etc.

Maturity: 1

Differential View

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | BeExtLaterality
extension |  | 0..0 |  |
url |  | 1..1 | uri | "https://www.ehealth.fgov.be/standards/fhir/core-clinical/StructureDefinition/be-ext-laterality"
value[x] |  | 0..1 | Coding | Value of extension Binding: Laterality (required)
Documentation for this format

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | BeExtLaterality
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..0 |  |
url |  | 1..1 | uri | "https://www.ehealth.fgov.be/standards/fhir/core-clinical/StructureDefinition/be-ext-laterality"
value[x] |  | 0..1 | Coding | Value of extension Binding: Laterality (required)
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type Coding: An explicit statement of laterality of a lesion, or a treatment, etc.

Maturity: 1

Other representations of profile: CSV, Excel, Schematron

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
Extension.value[x] | Base | required | Laterality | 📦1.0.1 | This IG

#### Constraints

Id | Grade | Path(s) | Description | Expression
ele-1 | error | **ALL** elements | All FHIR elements must have a @value or children | `hasValue() or (children().count() > id.count())`
ext-1 | error | **ALL** extensions | Must have either extensions or value[x], not both | `extension.exists() != value.exists()`