FHIR Extensions Pack
5.1.0 - 5.1.0 (April 2024) International flag

This page is part of the FHIR Core Extensions Registry (v5.1.0: Release 5.1) based on FHIR (HL7® FHIR® Standard) v5.0.0. This is the current published version. For a full list of available versions, see the Directory of published versions

Extension: Questionnaire Unit

Official URL: http://hl7.org/fhir/StructureDefinition/questionnaire-unit Version: 5.1.0
Standards status: Trial-use Maturity Level: 3 Computable Name: QUnit
Other Identifiers: OID:2.16.840.1.113883.4.642.5.1236

Provides a computable unit of measure associated with numeric questions to support subsequent computation on responses. This is for use on items of type integer and decimal, and its purpose is to support converting the integer or decimal answer into a Quantity when extracting the data into a resource. If a ‘display’ value is provided for valueCoding of this extension and the associated question item does not have a child ‘display’ item with an itemControl extension of ‘unit’, then form fillers SHOULD take the display value of this extension and use it as as the unit display.

Context of Use

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

  • Element ID Questionnaire.item

Usage info

Usage:

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

Changes since version 1.0.0:

  • 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 of type Coding: Provides a computable unit of measure associated with numeric questions to support subsequent computation on responses. This is for use on items of type integer and decimal, and its purpose is to support converting the integer or decimal answer into a Quantity when extracting the data into a resource. If a 'display' value is provided for valueCoding of this extension and the associated question item does not have a child 'display' item with an itemControl extension of 'unit', then form fillers SHOULD take the display value of this extension and use it as as the unit display.

    Maturity: 3

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraintsdoco
    .. Extension 0..1 Extension Unit for numeric answer
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/questionnaire-unit"
    ... value[x] 1..1 Coding Value of extension

    doco Documentation for this format
    NameFlagsCard.TypeDescription & Constraintsdoco
    .. Extension 0..1 Extension Unit for numeric answer
    ... id 0..1 id Unique id for inter-element referencing
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/questionnaire-unit"

    doco Documentation for this format

    This structure is derived from Extension

    Summary

    Simple Extension of type Coding: Provides a computable unit of measure associated with numeric questions to support subsequent computation on responses. This is for use on items of type integer and decimal, and its purpose is to support converting the integer or decimal answer into a Quantity when extracting the data into a resource. If a 'display' value is provided for valueCoding of this extension and the associated question item does not have a child 'display' item with an itemControl extension of 'unit', then form fillers SHOULD take the display value of this extension and use it as as the unit display.

    Maturity: 3

    Differential View

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraintsdoco
    .. Extension 0..1 Extension Unit for numeric answer
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/questionnaire-unit"
    ... value[x] 1..1 Coding Value of extension

    doco Documentation for this format

    Snapshot View

    NameFlagsCard.TypeDescription & Constraintsdoco
    .. Extension 0..1 Extension Unit for numeric answer
    ... id 0..1 id Unique id for inter-element referencing
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/questionnaire-unit"

    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()

    Search Parameters for this Extension

    (none found)