LOINC – IVD Test Code (LIVD) Mapping
1.0.0 - STU 1 International flag

LOINC – IVD Test Code (LIVD) Mapping, published by HL7 International / Orders and Observations. This guide is not an authorized publication; it is the continuous build for version 1.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/livd/ and changes regularly. See the Directory of published versions

Extension: LIVD Test Analyte

Official URL: http://hl7.org/fhir/uv/livd/StructureDefinition/ext-analyte Version: 1.0.0
Standards status: Trial-use Active as of 2025-12-17 Maturity Level: 2 Computable Name: LIVDTestAnalyte
Other Identifiers: OID:2.16.840.1.113883.4.642.40.51.42.5

Add a reference from DeviceDefinition.capability to one or more ObservationDefinition resources representing test analytes that may be measured.

Context of Use

Usage info

Usages:

You can also check for usages in the FHIR IG Statistics

Formal Views of Extension Content

Description Differentials, Snapshots, and other representations.

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension LIVD Test Analyte
... extension 0..0 Extension
... url 1..1 uri "http://hl7.org/fhir/uv/livd/StructureDefinition/ext-analyte"
... Slices for value[x] 1..1 Reference() Value of extension
Slice: Unordered, Open by type:$this
.... value[x]:valueReference 1..1 Reference(LIVDObservationDefinition) Value of extension

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension LIVD Test Analyte
... id 0..1 string Unique id for inter-element referencing
... extension 0..0 Extension
Slice: Unordered, Open by value:url
... url 1..1 uri "http://hl7.org/fhir/uv/livd/StructureDefinition/ext-analyte"
.... value[x]:valueReference 1..1 Reference(LIVDObservationDefinition) Value of extension

doco Documentation for this format

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()

Summary

Simple Extension with the type Reference: Add a reference from DeviceDefinition.capability to one or more ObservationDefinition resources representing test analytes that may be measured.

Maturity: 2

Differential ViewDifferential View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension LIVD Test Analyte
... extension 0..0 Extension
... url 1..1 uri "http://hl7.org/fhir/uv/livd/StructureDefinition/ext-analyte"
... Slices for value[x] 1..1 Reference() Value of extension
Slice: Unordered, Open by type:$this
.... value[x]:valueReference 1..1 Reference(LIVDObservationDefinition) Value of extension

doco Documentation for this format

Snapshot View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension LIVD Test Analyte
... id 0..1 string Unique id for inter-element referencing
... extension 0..0 Extension
Slice: Unordered, Open by value:url
... url 1..1 uri "http://hl7.org/fhir/uv/livd/StructureDefinition/ext-analyte"
.... value[x]:valueReference 1..1 Reference(LIVDObservationDefinition) Value of extension

doco Documentation for this format

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()

Summary

Simple Extension with the type Reference: Add a reference from DeviceDefinition.capability to one or more ObservationDefinition resources representing test analytes that may be measured.

Maturity: 2

 

Other representations of profile: CSV, Excel, Schematron