description: Defines elements that allow conversion of a QuestionnaireResponse to an Observation resource or Bundle of Observation resources using the Observation-based extraction mechanism package_name: hl7.fhir.uv.sdc.r4b derivation: constraint name: SDCQuestionnaireExtractObservation type: Questionnaire elements: item: constraint: sdc-obsn-1: {human: Display items cannot be extracted to Observations., severity: error, expression: 'type!=''display'' or extension(''http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-observationExtract'').empty()'} index: 0 extensions: unit: {url: 'http://hl7.org/fhir/StructureDefinition/questionnaire-unit', min: 0, max: 1, type: Extension, mustSupport: true, index: 1} observationExtract: {url: 'http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-observationExtract', min: 0, max: 1, type: Extension, mustSupport: true, index: 2} observationExtractCategory: {url: 'http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-observation-extract-category', min: 0, type: Extension, index: 3} isSubject: {url: 'http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-isSubject', min: 0, max: 1, type: Extension, index: 4} elements: extension: type: Extension mustSupport: true url: http://hl7.org/fhir/StructureDefinition/questionnaire-unit index: 1 slicing: slices: unit: match: {} schema: {type: Extension, mustSupport: true, url: 'http://hl7.org/fhir/StructureDefinition/questionnaire-unit', index: 1} min: 0 max: 1 observationExtract: match: {} schema: {type: Extension, mustSupport: true, url: 'http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-observationExtract', index: 2} min: 0 max: 1 observationExtractCategory: match: {} schema: {type: Extension, url: 'http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-observation-extract-category', index: 3} min: 0 isSubject: match: {} schema: {type: Extension, url: 'http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-isSubject', index: 4} min: 0 max: 1 code: mustSupport: true index: 5 extensions: observationExtract: {url: 'http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-observationExtract', min: 0, max: 1, type: Extension, mustSupport: true, index: 6} elements: extension: type: Extension mustSupport: true url: http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-observationExtract index: 6 slicing: slices: observationExtract: match: {} schema: {type: Extension, mustSupport: true, url: 'http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-observationExtract', index: 6} min: 0 max: 1 package_version: 3.0.0 class: profile kind: resource url: http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-extr-obsn base: http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire version: 3.0.0