Structured Data Capture
4.0.0 - International flag

Structured Data Capture, published by HL7 International / FHIR Infrastructure. This guide is not an authorized publication; it is the continuous build for version 4.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/sdc/ and changes regularly. See the Directory of published versions

Extension: Max quantity

Official URL: http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-maxQuantity Version: 4.0.0
Standards status: Trial-use Active as of 2025-10-22 Maturity Level: 4 Computable Name: MaxQuantityExtension
Other Identifiers: OID:2.16.840.1.113883.4.642.40.17.42.36

The inclusive upper bound on the range of allowed values for a 'quantity' type question. Open Issue: Revisit whether this should be folded into the regular maxValue extension once there are better capabilities around defining conformance expectations regarding extensions.

Context of Use

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

    In addition, the extension can only be used when this FHIRPath expression is true:

    ofType(ElementDefinition).type.exists(code='Quantity') or where(%resource.is(Questionnaire)).exists(type.first()='quantity')

Additional details on the use of this extension can be found on the Form Behavior page.

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..1 Extension Must be <= this value
... extension 0..0
... url 1..1 uri "http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-maxQuantity"
... value[x] 0..1 Quantity Value of extension

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..1 Extension Must be <= this value
... id 0..1 string Unique id for inter-element referencing
... extension 0..0
... url 1..1 uri "http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-maxQuantity"

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 Quantity: The inclusive upper bound on the range of allowed values for a 'quantity' type question. Open Issue: Revisit whether this should be folded into the regular maxValue extension once there are better capabilities around defining conformance expectations regarding extensions.

Maturity: 4

Differential ViewDifferential View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..1 Extension Must be <= this value
... extension 0..0
... url 1..1 uri "http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-maxQuantity"
... value[x] 0..1 Quantity Value of extension

doco Documentation for this format

Snapshot View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..1 Extension Must be <= this value
... id 0..1 string Unique id for inter-element referencing
... extension 0..0
... url 1..1 uri "http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-maxQuantity"

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 Quantity: The inclusive upper bound on the range of allowed values for a 'quantity' type question. Open Issue: Revisit whether this should be folded into the regular maxValue extension once there are better capabilities around defining conformance expectations regarding extensions.

Maturity: 4

 

Other representations of profile: CSV, Excel, Schematron