Structured Data Capture
4.0.0 - STU 4
Structured Data Capture
4.0.0 - STU 4
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
| Official URL: http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-itemExtractionContext | Version: 4.0.0 | |||
| Standards status: Deprecated | Maturity Level: 0 | Computable Name: ItemExtractionContextExtension | ||
| Other Identifiers: OID:2.16.840.1.113883.4.642.40.17.42.31 | ||||
Specifies a query or other expression that identifies the resource (or set of resources for a repeating item) to be extracted from this item once the QuestionnaireResponse is complete. This extension is deprecated in favor of the DefinitionExtractExtension extension.
Context of Use
This extension is deprecated and should no longer be used
This extension may be used on the following element(s)
Questionnaire
Questionnaire.item
ElementDefinition
Note: This extension has been superceded by the definitionExtract extension. Please migrate to that extension, however this one will remain for backward compatibility.
This extension does not support defining a profile to create, and the expression (x-fhir-query) was not deemed sufficiently implementable.
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
Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work.
This structure is derived from Extension
| Name | Flags | Card. | Type | Description & Constraints Filter:   |
|---|---|---|---|---|
  Extension |
0..1 | Extension | Establishes mapping context for a Questionnaire item | |
  extension |
0..0 | |||
| url |
1..1 | uri | "http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-itemExtractionContext" | |
  value[x] |
0..1 | Value of extension Binding: ResourceType (required): If value is of type 'code', then the extraction is always the creation of a new resource of the specified type. | ||
  valueCode |
code | |||
  valueExpression |
Expression | |||
| Documentation for this format | ||||
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..1 | Extension | Establishes mapping context for a Questionnaire item | |
| 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-itemExtractionContext" | |
| value[x] |
0..1 | Value of extension Binding: ResourceType (required): If value is of type 'code', then the extraction is always the creation of a new resource of the specified type. | ||
| valueCode |
code | |||
| valueExpression |
Expression | |||
| Documentation for this format | ||||
This structure is derived from Extension
Summary
Simple Extension with the type code, Expression: Specifies a query or other expression that identifies the resource (or set of resources for a repeating item) to be extracted from this item once the QuestionnaireResponse is complete. This extension is deprecated in favor of the DefinitionExtractExtension extension.
Maturity: 0
Differential View
This structure is derived from Extension
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..1 | Extension | Establishes mapping context for a Questionnaire item | |
| extension |
0..0 | |||
| url |
1..1 | uri | "http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-itemExtractionContext" | |
| value[x] |
0..1 | Value of extension Binding: ResourceType (required): If value is of type 'code', then the extraction is always the creation of a new resource of the specified type. | ||
| valueCode |
code | |||
| valueExpression |
Expression | |||
| Documentation for this format | ||||
Snapshot View
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..1 | Extension | Establishes mapping context for a Questionnaire item | |
| 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-itemExtractionContext" | |
| value[x] |
0..1 | Value of extension Binding: ResourceType (required): If value is of type 'code', then the extraction is always the creation of a new resource of the specified type. | ||
| valueCode |
code | |||
| valueExpression |
Expression | |||
| Documentation for this format | ||||
This structure is derived from Extension
Summary
Simple Extension with the type code, Expression: Specifies a query or other expression that identifies the resource (or set of resources for a repeating item) to be extracted from this item once the QuestionnaireResponse is complete. This extension is deprecated in favor of the DefinitionExtractExtension extension.
Maturity: 0
Other representations of profile: CSV, Excel, Schematron
| Path | Conformance | ValueSet | URI |
| Extension.value[x] | required | ResourceTypehttp://hl7.org/fhir/ValueSet/resource-typesFrom the FHIR Standard |
| Id | Grade | Path(s) | Details | Requirements |
| 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() |
IG © 2022+ HL7 International / FHIR Infrastructure. Package hl7.fhir.uv.sdc#4.0.0 based on FHIR 4.0.1. Generated 2025-09-18
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