FHIR Extensions Pack
5.3.0-ballot - (September 2025 Ballot) International flag

This page is part of the FHIR Core Extensions Registry (v5.3.0-ballot: Release 5.3) based on FHIR (HL7® FHIR® Standard) v5.0.0. This version is a pre-release. The current official version is 5.2.0. For a full list of available versions, see the Directory of published versions

Extension: Item Weight

Official URL: http://hl7.org/fhir/StructureDefinition/itemWeight Version: 5.3.0-ballot
Standards status: Trial-use Maturity Level: 2 Computable Name: ItemWeight
Other Identifiers: OID:2.16.840.1.113883.4.642.5.1545

A numeric value that allows the comparison (less than, greater than) or other numerical manipulation of a concept (e.g. Adding up components of a score). Scores are usually a whole number, but occasionally decimals are encountered in scores. Note: This extension used to be called http://hl7.org/fhir/StructureDefinition/ordinalValue. In questionnaires, this extension goes on answerOption where possible.

Context of Use

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

Usage info

Usages:

You can also check for usages in the FHIR IG Statistics

Changes since version 5.2.0:

  • The resource metadata has changed (status, description)
  • The data elements list has changed
  • One or more text definitions, invariants or bindings have changed

    • 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 decimal: A numeric value that allows the comparison (less than, greater than) or other numerical manipulation of a concept (e.g. Adding up components of a score). Scores are usually a whole number, but occasionally decimals are encountered in scores. Note: This extension used to be called http://hl7.org/fhir/StructureDefinition/ordinalValue. In questionnaires, this extension goes on answerOption where possible.

    Maturity: 2

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..1 Extension Assigned Ordinal Value
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/itemWeight"
    ... value[x] 1..1 decimal Value of extension

    doco Documentation for this format
    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..1 Extension Assigned Ordinal Value
    ... id 0..1 id Unique id for inter-element referencing
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/itemWeight"

    doco Documentation for this format

    This structure is derived from Extension

    Summary

    Simple Extension with the type decimal: A numeric value that allows the comparison (less than, greater than) or other numerical manipulation of a concept (e.g. Adding up components of a score). Scores are usually a whole number, but occasionally decimals are encountered in scores. Note: This extension used to be called http://hl7.org/fhir/StructureDefinition/ordinalValue. In questionnaires, this extension goes on answerOption where possible.

    Maturity: 2

    Differential View

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..1 Extension Assigned Ordinal Value
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/itemWeight"
    ... value[x] 1..1 decimal Value of extension

    doco Documentation for this format

    Snapshot View

    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..1 Extension Assigned Ordinal Value
    ... id 0..1 id Unique id for inter-element referencing
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/itemWeight"

    doco Documentation for this format

     

    Other representations of profile: CSV, Excel, Schematron

    Constraints

    IdGradePath(s)DetailsRequirements
    ele-1error**ALL** elementsAll FHIR elements must have a @value or children
    : hasValue() or (children().count() > id.count())
    ext-1error**ALL** extensionsMust 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)