FHIR Extensions Pack
5.3.0 - May 2026 International flag

This page is part of the FHIR Core Extensions Registry (v5.3.0: Release 5.3) based on FHIR (HL7® FHIR® Standard) v5.0.0. This is the current published version in its permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions

Extension: Observation Nature of Abnormal Test

Official URL: http://hl7.org/fhir/StructureDefinition/observation-nature-of-abnormal-test Version: 5.3.0
Standards status: Trial-use Maturity Level: 0 Responsible: HL7 International / Orders and Observations Computable Name: ObsNatureAbnormal
Other Identifiers: OID:2.16.840.1.113883.4.642.5.1777

This field contains the nature of the abnormal test. This is represented in v2 as OBX-10 Nature of abnormal test (ID) 00578.

Context of Use

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

Usage info

Usages:

  • This Extension is not used by any profiles in this Implementation Guide

You can also check for usages in the FHIR IG Statistics

Changes since version 5.2.0:

  • No changes

    • Formal Views of Extension Content

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

    This structure is derived from Extension

    Summary

    Simple Extension with the type CodeableConcept: This field contains the nature of the abnormal test. This is represented in v2 as OBX-10 Nature of abnormal test (ID) 00578.

    Maturity: 0

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..* Extension The nature of the abnormal test.
    ... extension 0..0 Extension
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/observation-nature-of-abnormal-test"
    ... value[x] 1..1 CodeableConcept Value of extension
    Binding: hl7VS-natureOfAbnormalTesting (preferred): Codes specifying the nature of an abnormal test.

    doco Documentation for this format
    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..* Extension The nature of the abnormal test.
    ... id 0..1 id Unique id for inter-element referencing
    ... extension 0..0 Extension
    Slice: Unordered, Open by value:url
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/observation-nature-of-abnormal-test"

    doco Documentation for this format

    This structure is derived from Extension

    Summary

    Simple Extension with the type CodeableConcept: This field contains the nature of the abnormal test. This is represented in v2 as OBX-10 Nature of abnormal test (ID) 00578.

    Maturity: 0

    Differential View

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..* Extension The nature of the abnormal test.
    ... extension 0..0 Extension
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/observation-nature-of-abnormal-test"
    ... value[x] 1..1 CodeableConcept Value of extension
    Binding: hl7VS-natureOfAbnormalTesting (preferred): Codes specifying the nature of an abnormal test.

    doco Documentation for this format

    Snapshot View

    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..* Extension The nature of the abnormal test.
    ... id 0..1 id Unique id for inter-element referencing
    ... extension 0..0 Extension
    Slice: Unordered, Open by value:url
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/observation-nature-of-abnormal-test"

    doco Documentation for this format

     

    Other representations of profile: CSV, Excel, Schematron

    Terminology Bindings

    Path Status Usage ValueSet Version Source
    Extension.value[x] Base preferred hl7VS-natureOfAbnormalTesting 📦3.0.0 THO v7.1

    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()

    R4B

    The extension is unchanged in R4B

    R4

    The extension is unchanged in R4

    R3

    The extension is unchanged in R3

    Search Parameters for this Extension

    (none found)