#156

hl7ch · Nov 13, 2023 · 32faea3 · 32faea3
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diff --git a/input/pagecontent/changelog.md b/input/pagecontent/changelog.md
@@ -11,6 +11,9 @@ All significant changes to this FHIR implementation guide will be documented on
 * [#152](https://github.com/hl7ch/ch-orf/issues/152): Fix formatting and update style that it is clear that the text comes from SDC
 * [#153](https://github.com/hl7ch/ch-orf/issues/153): Remove duplicated terms and unify spelling of CH eTOC
 
+#### Open
+* [#156](https://github.com/hl7ch/ch-orf/issues/156): Support Definition-based extraction 
+
 #### Issues resolved without amendment
 
 

diff --git a/input/pagecontent/form-data-extraction.md b/input/pagecontent/form-data-extraction.md
@@ -7,4 +7,6 @@ An ORF document is a FHIR document (bundle) that contains the results of a fille
 
 To support this extraction, the ORF guide supports [StructureMap-based extraction](http://hl7.org/fhir/uv/sdc/STU3/extraction.html#structuremap-based-extraction). The ORF Implementation Guide provides a [StructureMap](StructureMap-OrfQrToBundle.html) which maps all fields in the [ORF Questionnaire](questionnaire-form.html). To extract data from the completed QuestionnaireResponse,  the [StructureMap](StructureMap-OrfQrToBundle.html) needs to be invoked. This can be done by invoking the [Extract operation](http://hl7.org/fhir/uv/sdc/STU3/OperationDefinition-QuestionnaireResponse-extract.html) that takes a completed QuestionnaireResponse and converts it to a Bundle of resources by using metadata embedded in the Questionnaire the QuestionnaireResponse is based on.
 
-Derived Implementation Guides should provide further maps that the clinical data from entries can be mapped to FHIR resource data elements.
+Derived Implementation Guides should provide further maps that the clinical data from entries can be mapped to FHIR resource data elements.
+
+Another data extraction approach defined by SDC is [definition based extraction support](https://hl7.org/fhir/uv/sdc/STU3/extraction.html#definition-based-extraction). This is not yet supported directly by the ORF Questionnaire directly due to limitations of creating a Bundle with references between resources, however if that capability is added it will be also included as another option for a future version, see [open issues](changelog.html).