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 Constraint

Official URL: http://hl7.org/fhir/StructureDefinition/questionnaire-constraint Version: 5.1.0
Standards status: Deprecated Maturity Level: 3 Computable Name: QConstraint
Other Identifiers: OID:2.16.840.1.113883.4.642.5.1247

DEPRECATED: Use the targetConstraint extension instead. An invariant that must be satisfied before responses to the questionnaire can be considered “complete”.

Context of Use

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

  • Element ID Questionnaire
  • Element ID Questionnaire.item
  • Element ID ElementDefinition

Usage info

Usage:

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

Changes since version 1.0.0:

  • The resource metadata has changed (description)

    • 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

    Complex Extension: DEPRECATED: Use the targetConstraint extension instead. An invariant that must be satisfied before responses to the questionnaire can be considered "complete".

    • key: id: Unique id for the constraint within the questionnaire.
    • requirements: string: An explanation of why this extension is required (for documentation purposes).
    • severity: code: Indicates how serious violating the invariant is.
    • expression: string: The FHIRPath expression of the rule for computable interpretation.
    • human: string: A free text expression of the rule to display to the user if the rule is violated.
    • location: string: Relative paths to the questions this rule is enforced against.

    Maturity: 3

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraintsdoco
    .. Extension 0..* Extension Constraint
    ... Slices for extension Content/Rules for all slices
    .... extension:key 1..1 Extension Unique identifier
    ..... extension 0..0
    ..... url 1..1 uri "key"
    ..... value[x] 1..1 id Value of extension
    .... extension:requirements 0..1 Extension Why needed
    ..... extension 0..0
    ..... url 1..1 uri "requirements"
    ..... value[x] 1..1 string Value of extension
    .... extension:severity 1..1 Extension error|warning
    ..... extension 0..0
    ..... url 1..1 uri "severity"
    ..... value[x] 1..1 code Value of extension
    Binding: ConstraintSeverity (required): How important the invariant is.

    .... extension:expression 1..1 Extension Formal rule
    ..... extension 0..0
    ..... url 1..1 uri "expression"
    ..... value[x] 1..1 string Value of extension
    .... extension:human 1..1 Extension Human-readable rule
    ..... extension 0..0
    ..... url 1..1 uri "human"
    ..... value[x] 1..1 string Value of extension
    .... extension:location 0..* Extension Relative path to elements
    ..... extension 0..0
    ..... url 1..1 uri "location"
    ..... value[x] 1..1 string Value of extension
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/questionnaire-constraint"
    ... value[x] 0..0

    doco Documentation for this format
    NameFlagsCard.TypeDescription & Constraintsdoco
    .. Extension 0..* Extension Constraint
    ... id 0..1 id Unique id for inter-element referencing
    ... Slices for extension 4..* Extension Additional content defined by implementations
    Slice: Unordered, Open by value:url
    .... extension:key 1..1 Extension Unique identifier
    ..... id 0..1 id Unique id for inter-element referencing
    ..... extension 0..0
    ..... url 1..1 uri "key"
    ..... value[x] 1..1 id Value of extension
    .... extension:requirements 0..1 Extension Why needed
    ..... id 0..1 id Unique id for inter-element referencing
    ..... extension 0..0
    ..... url 1..1 uri "requirements"
    ..... value[x] 1..1 string Value of extension
    .... extension:severity 1..1 Extension error|warning
    ..... id 0..1 id Unique id for inter-element referencing
    ..... extension 0..0
    ..... url 1..1 uri "severity"
    ..... value[x] 1..1 code Value of extension
    Binding: ConstraintSeverity (required): How important the invariant is.

    .... extension:expression 1..1 Extension Formal rule
    ..... id 0..1 id Unique id for inter-element referencing
    ..... extension 0..0
    ..... url 1..1 uri "expression"
    ..... value[x] 1..1 string Value of extension
    .... extension:human 1..1 Extension Human-readable rule
    ..... id 0..1 id Unique id for inter-element referencing
    ..... extension 0..0
    ..... url 1..1 uri "human"
    ..... value[x] 1..1 string Value of extension
    .... extension:location 0..* Extension Relative path to elements
    ..... id 0..1 id Unique id for inter-element referencing
    ..... extension 0..0
    ..... url 1..1 uri "location"
    ..... value[x] 1..1 string Value of extension
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/questionnaire-constraint"

    doco Documentation for this format

    This structure is derived from Extension

    Summary

    Complex Extension: DEPRECATED: Use the targetConstraint extension instead. An invariant that must be satisfied before responses to the questionnaire can be considered "complete".

    • key: id: Unique id for the constraint within the questionnaire.
    • requirements: string: An explanation of why this extension is required (for documentation purposes).
    • severity: code: Indicates how serious violating the invariant is.
    • expression: string: The FHIRPath expression of the rule for computable interpretation.
    • human: string: A free text expression of the rule to display to the user if the rule is violated.
    • location: string: Relative paths to the questions this rule is enforced against.

    Maturity: 3

    Differential View

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraintsdoco
    .. Extension 0..* Extension Constraint
    ... Slices for extension Content/Rules for all slices
    .... extension:key 1..1 Extension Unique identifier
    ..... extension 0..0
    ..... url 1..1 uri "key"
    ..... value[x] 1..1 id Value of extension
    .... extension:requirements 0..1 Extension Why needed
    ..... extension 0..0
    ..... url 1..1 uri "requirements"
    ..... value[x] 1..1 string Value of extension
    .... extension:severity 1..1 Extension error|warning
    ..... extension 0..0
    ..... url 1..1 uri "severity"
    ..... value[x] 1..1 code Value of extension
    Binding: ConstraintSeverity (required): How important the invariant is.

    .... extension:expression 1..1 Extension Formal rule
    ..... extension 0..0
    ..... url 1..1 uri "expression"
    ..... value[x] 1..1 string Value of extension
    .... extension:human 1..1 Extension Human-readable rule
    ..... extension 0..0
    ..... url 1..1 uri "human"
    ..... value[x] 1..1 string Value of extension
    .... extension:location 0..* Extension Relative path to elements
    ..... extension 0..0
    ..... url 1..1 uri "location"
    ..... value[x] 1..1 string Value of extension
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/questionnaire-constraint"
    ... value[x] 0..0

    doco Documentation for this format

    Snapshot View

    NameFlagsCard.TypeDescription & Constraintsdoco
    .. Extension 0..* Extension Constraint
    ... id 0..1 id Unique id for inter-element referencing
    ... Slices for extension 4..* Extension Additional content defined by implementations
    Slice: Unordered, Open by value:url
    .... extension:key 1..1 Extension Unique identifier
    ..... id 0..1 id Unique id for inter-element referencing
    ..... extension 0..0
    ..... url 1..1 uri "key"
    ..... value[x] 1..1 id Value of extension
    .... extension:requirements 0..1 Extension Why needed
    ..... id 0..1 id Unique id for inter-element referencing
    ..... extension 0..0
    ..... url 1..1 uri "requirements"
    ..... value[x] 1..1 string Value of extension
    .... extension:severity 1..1 Extension error|warning
    ..... id 0..1 id Unique id for inter-element referencing
    ..... extension 0..0
    ..... url 1..1 uri "severity"
    ..... value[x] 1..1 code Value of extension
    Binding: ConstraintSeverity (required): How important the invariant is.

    .... extension:expression 1..1 Extension Formal rule
    ..... id 0..1 id Unique id for inter-element referencing
    ..... extension 0..0
    ..... url 1..1 uri "expression"
    ..... value[x] 1..1 string Value of extension
    .... extension:human 1..1 Extension Human-readable rule
    ..... id 0..1 id Unique id for inter-element referencing
    ..... extension 0..0
    ..... url 1..1 uri "human"
    ..... value[x] 1..1 string Value of extension
    .... extension:location 0..* Extension Relative path to elements
    ..... id 0..1 id Unique id for inter-element referencing
    ..... extension 0..0
    ..... url 1..1 uri "location"
    ..... value[x] 1..1 string Value of extension
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/questionnaire-constraint"

    doco Documentation for this format

     

    Other representations of profile: CSV, Excel, Schematron

    Terminology Bindings

    PathConformanceValueSetURI
    Extension.extension:severity.value[x]requiredConstraintSeverity
    http://hl7.org/fhir/ValueSet/constraint-severity
    from the FHIR Standard

    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)