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: Extract Template - Context

Official URL: http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-templateExtractContext Version: 4.0.0
Standards status: Draft Draft as of 2025-10-22 Maturity Level: 0 Computable Name: TemplateExtractContextExtension
Other Identifiers: OID:2.16.840.1.113883.4.642.40.17.42.87

Establishes mapping context for replacing template content based on a fhirpath expression. This will be used by any child properties as the context for any other templateExtractContext or templateExtractValue extensions. If the name property on an expression is included, it will be also available to child extension evaluation. If the expression evaluates to no results, then this element in the templated resource will be removed, and futher processing of it's children is not required.

Context of Use

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

Additional details on the use of this extension can be found on the Data Extraction 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 FhirPath expression
... extension 0..0
... url 1..1 uri "http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-templateExtractContext"
... value[x] 0..1 Value of extension
.... valueString string
.... valueExpression Expression

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..1 Extension FhirPath expression
... 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-templateExtractContext"
.... valueString string
.... valueExpression Expression

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 string, Expression: Establishes mapping context for replacing template content based on a fhirpath expression. This will be used by any child properties as the context for any other templateExtractContext or templateExtractValue extensions. If the name property on an expression is included, it will be also available to child extension evaluation. If the expression evaluates to no results, then this element in the templated resource will be removed, and futher processing of it's children is not required.

Maturity: 0

Differential ViewDifferential View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..1 Extension FhirPath expression
... extension 0..0
... url 1..1 uri "http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-templateExtractContext"
... value[x] 0..1 Value of extension
.... valueString string
.... valueExpression Expression

doco Documentation for this format

Snapshot View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..1 Extension FhirPath expression
... 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-templateExtractContext"
.... valueString string
.... valueExpression Expression

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 string, Expression: Establishes mapping context for replacing template content based on a fhirpath expression. This will be used by any child properties as the context for any other templateExtractContext or templateExtractValue extensions. If the name property on an expression is included, it will be also available to child extension evaluation. If the expression evaluates to no results, then this element in the templated resource will be removed, and futher processing of it's children is not required.

Maturity: 0

 

Other representations of profile: CSV, Excel, Schematron