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
| Page standards status: Draft | Maturity Level: 0 | 
Definitions for the sdc-questionnaire-definitionExtract extension
Guidance on how to interpret the contents of this table can be foundhere
| 0. Extension | |
| Definition | Specifies the resource type/profile for the definition based extraction of a resource and optionally the  Optional Extension Element - found in all resources.  | 
| Short | Details for a definition based resource extractionOptional Extensions Element | 
| Control | 0..* This element is affected by the following invariants: ele-1  | 
| Is Modifier | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both ( extension.exists() != value.exists())ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())  | 
| 2. Extension.extension | |
| Definition | An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.  | 
| Short | ExtensionAdditional content defined by implementations | 
| Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.  | 
| Control | 10..* | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Alternate Names | extensions, user content | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())  | 
| Slicing | This element introduces a set of slices on Extension.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators: | 
| 4. Extension.extension:definition | |
| Slice Name | definition | 
| Definition | The resource type/profile canonical Url defining the resource type to be extracted.  | 
| Short | Canonical URL of Resource type or profile to extractAdditional content defined by implementations | 
| Comments | The canonical URL for a base resource can be used if a specific profile is not required, e.g.  The value used here will be the prefix value (before the #) in any child items  Where a specific profile is used (not the base resource), then this canonical value will be set in the created resource's   | 
| Control | 10..1* | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())  | 
| 6. Extension.extension:definition.extension | |
| Definition | An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.  | 
| Short | ExtensionAdditional content defined by implementations | 
| Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.  | 
| Control | 0..0* | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Alternate Names | extensions, user content | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())  | 
| Slicing | This element introduces a set of slices on Extension.extension.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators: | 
| 8. Extension.extension:definition.url | |
| Definition | Source of the definition for the extension code - a logical name or a URL.  | 
| Short | identifies the meaning of the extension | 
| Comments | The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.  | 
| Control | 1..1 | 
| Type | uri | 
| Is Modifier | false | 
| XML Format | In the XML format, this property is represented as an attribute. | 
| Summary | false | 
| Fixed Value | definition | 
| 10. Extension.extension:definition.value[x] | |
| Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).  | 
| Short | Resource Profile canonical URLValue of extension | 
| Control | 10..1 | 
| Type | canonical, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| Is Modifier | false | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) | 
| 12. Extension.extension:fullUrl | |
| Slice Name | fullUrl | 
| Definition | A fhirpath expression to evaluate to extract the value into the fullUrl property. If no value is evaluated, then the element is not extracted.  | 
| Short | A fhirpath expression to evaluate to populate the fullUrl property in the `Bundle.entry` (uri/string result)Additional content defined by implementations | 
| Control | 0..1* | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())  | 
| 14. Extension.extension:fullUrl.extension | |
| Definition | An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.  | 
| Short | ExtensionAdditional content defined by implementations | 
| Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.  | 
| Control | 0..0* | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Alternate Names | extensions, user content | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())  | 
| Slicing | This element introduces a set of slices on Extension.extension.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators: | 
| 16. Extension.extension:fullUrl.url | |
| Definition | Source of the definition for the extension code - a logical name or a URL.  | 
| Short | identifies the meaning of the extension | 
| Comments | The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.  | 
| Control | 1..1 | 
| Type | uri | 
| Is Modifier | false | 
| XML Format | In the XML format, this property is represented as an attribute. | 
| Summary | false | 
| Fixed Value | fullUrl | 
| 18. Extension.extension:fullUrl.value[x] | |
| Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).  | 
| Short | Fhirpath Expression valueValue of extension | 
| Control | 10..1 | 
| Type | string, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| Is Modifier | false | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) | 
| 20. Extension.extension:ifNoneMatch | |
| Slice Name | ifNoneMatch | 
| Definition | A fhirpath expression to evaluate to extract the value into the ifNoneMatch property. If no value is evaluated, then the element is not extracted.  | 
| Short | A fhirpath expression to evaluate to populate the ifNoneMatch property (string result)Additional content defined by implementations | 
| Control | 0..1* | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())  | 
| 22. Extension.extension:ifNoneMatch.extension | |
| Definition | An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.  | 
| Short | ExtensionAdditional content defined by implementations | 
| Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.  | 
| Control | 0..0* | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Alternate Names | extensions, user content | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())  | 
| Slicing | This element introduces a set of slices on Extension.extension.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators: | 
| 24. Extension.extension:ifNoneMatch.url | |
| Definition | Source of the definition for the extension code - a logical name or a URL.  | 
| Short | identifies the meaning of the extension | 
| Comments | The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.  | 
| Control | 1..1 | 
| Type | uri | 
| Is Modifier | false | 
| XML Format | In the XML format, this property is represented as an attribute. | 
| Summary | false | 
| Fixed Value | ifNoneMatch | 
| 26. Extension.extension:ifNoneMatch.value[x] | |
| Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).  | 
| Short | Fhirpath Expression valueValue of extension | 
| Control | 10..1 | 
| Type | string, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| Is Modifier | false | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) | 
| 28. Extension.extension:ifModifiedSince | |
| Slice Name | ifModifiedSince | 
| Definition | A fhirpath expression to evaluate to extract the value into the ifModifiedSince property. If no value is evaluated, then the element is not extracted.  | 
| Short | A fhirpath expression to evaluate to populate the ifModifiedSince property (instant result)Additional content defined by implementations | 
| Control | 0..1* | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())  | 
| 30. Extension.extension:ifModifiedSince.extension | |
| Definition | An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.  | 
| Short | ExtensionAdditional content defined by implementations | 
| Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.  | 
| Control | 0..0* | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Alternate Names | extensions, user content | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())  | 
| Slicing | This element introduces a set of slices on Extension.extension.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators: | 
| 32. Extension.extension:ifModifiedSince.url | |
| Definition | Source of the definition for the extension code - a logical name or a URL.  | 
| Short | identifies the meaning of the extension | 
| Comments | The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.  | 
| Control | 1..1 | 
| Type | uri | 
| Is Modifier | false | 
| XML Format | In the XML format, this property is represented as an attribute. | 
| Summary | false | 
| Fixed Value | ifModifiedSince | 
| 34. Extension.extension:ifModifiedSince.value[x] | |
| Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).  | 
| Short | Fhirpath Expression valueValue of extension | 
| Control | 10..1 | 
| Type | string, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| Is Modifier | false | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) | 
| 36. Extension.extension:ifMatch | |
| Slice Name | ifMatch | 
| Definition | A fhirpath expression to evaluate to extract the value into the ifMatch property. If no value is evaluated, then the element is not extracted.  | 
| Short | A fhirpath expression to evaluate to populate the ifMatch property (string result)Additional content defined by implementations | 
| Control | 0..1* | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())  | 
| 38. Extension.extension:ifMatch.extension | |
| Definition | An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.  | 
| Short | ExtensionAdditional content defined by implementations | 
| Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.  | 
| Control | 0..0* | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Alternate Names | extensions, user content | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())  | 
| Slicing | This element introduces a set of slices on Extension.extension.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators: | 
| 40. Extension.extension:ifMatch.url | |
| Definition | Source of the definition for the extension code - a logical name or a URL.  | 
| Short | identifies the meaning of the extension | 
| Comments | The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.  | 
| Control | 1..1 | 
| Type | uri | 
| Is Modifier | false | 
| XML Format | In the XML format, this property is represented as an attribute. | 
| Summary | false | 
| Fixed Value | ifMatch | 
| 42. Extension.extension:ifMatch.value[x] | |
| Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).  | 
| Short | Fhirpath Expression valueValue of extension | 
| Control | 10..1 | 
| Type | string, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| Is Modifier | false | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) | 
| 44. Extension.extension:ifNoneExist | |
| Slice Name | ifNoneExist | 
| Definition | A fhirpath expression to evaluate to extract the value into the ifNoneExist property. If no value is evaluated, then the element is not extracted.  | 
| Short | A fhirpath expression to evaluate to populate the ifNoneExist property (string result)Additional content defined by implementations | 
| Control | 0..1* | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())  | 
| 46. Extension.extension:ifNoneExist.extension | |
| Definition | An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.  | 
| Short | ExtensionAdditional content defined by implementations | 
| Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.  | 
| Control | 0..0* | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Alternate Names | extensions, user content | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())  | 
| Slicing | This element introduces a set of slices on Extension.extension.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators: | 
| 48. Extension.extension:ifNoneExist.url | |
| Definition | Source of the definition for the extension code - a logical name or a URL.  | 
| Short | identifies the meaning of the extension | 
| Comments | The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.  | 
| Control | 1..1 | 
| Type | uri | 
| Is Modifier | false | 
| XML Format | In the XML format, this property is represented as an attribute. | 
| Summary | false | 
| Fixed Value | ifNoneExist | 
| 50. Extension.extension:ifNoneExist.value[x] | |
| Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).  | 
| Short | Fhirpath Expression valueValue of extension | 
| Control | 10..1 | 
| Type | string, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| Is Modifier | false | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) | 
| 52. Extension.url | |
| Definition | Source of the definition for the extension code - a logical name or a URL.  | 
| Short | identifies the meaning of the extension | 
| Comments | The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.  | 
| Control | 1..1 | 
| Type | uri | 
| Is Modifier | false | 
| XML Format | In the XML format, this property is represented as an attribute. | 
| Summary | false | 
| Fixed Value | http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-definitionExtract | 
| 54. Extension.value[x] | |
| Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).  | 
| Short | Value of extension | 
| Control | 0..01 | 
| Type | Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage, Meta | 
| Is Modifier | false | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) | 
Guidance on how to interpret the contents of this table can be foundhere
| 0. Extension | |
| Definition | Specifies the resource type/profile for the definition based extraction of a resource and optionally the   | 
| Short | Details for a definition based resource extraction | 
| 2. Extension.extension | |
| Control | 1..? | 
| 4. Extension.extension:definition | |
| Slice Name | definition | 
| Definition | The resource type/profile canonical Url defining the resource type to be extracted.  | 
| Short | Canonical URL of Resource type or profile to extract | 
| Comments | The canonical URL for a base resource can be used if a specific profile is not required, e.g.  The value used here will be the prefix value (before the #) in any child items  Where a specific profile is used (not the base resource), then this canonical value will be set in the created resource's   | 
| Control | 1..1 | 
| 6. Extension.extension:definition.extension | |
| Control | 0..0 | 
| 8. Extension.extension:definition.url | |
| Fixed Value | definition | 
| 10. Extension.extension:definition.value[x] | |
| Short | Resource Profile canonical URL | 
| Control | 1..? | 
| Type | canonical | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| 12. Extension.extension:fullUrl | |
| Slice Name | fullUrl | 
| Definition | A fhirpath expression to evaluate to extract the value into the fullUrl property. If no value is evaluated, then the element is not extracted.  | 
| Short | A fhirpath expression to evaluate to populate the fullUrl property in the `Bundle.entry` (uri/string result) | 
| Control | 0..1 | 
| 14. Extension.extension:fullUrl.extension | |
| Control | 0..0 | 
| 16. Extension.extension:fullUrl.url | |
| Fixed Value | fullUrl | 
| 18. Extension.extension:fullUrl.value[x] | |
| Short | Fhirpath Expression value | 
| Control | 1..? | 
| Type | string | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| 20. Extension.extension:ifNoneMatch | |
| Slice Name | ifNoneMatch | 
| Definition | A fhirpath expression to evaluate to extract the value into the ifNoneMatch property. If no value is evaluated, then the element is not extracted.  | 
| Short | A fhirpath expression to evaluate to populate the ifNoneMatch property (string result) | 
| Control | 0..1 | 
| 22. Extension.extension:ifNoneMatch.extension | |
| Control | 0..0 | 
| 24. Extension.extension:ifNoneMatch.url | |
| Fixed Value | ifNoneMatch | 
| 26. Extension.extension:ifNoneMatch.value[x] | |
| Short | Fhirpath Expression value | 
| Control | 1..? | 
| Type | string | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| 28. Extension.extension:ifModifiedSince | |
| Slice Name | ifModifiedSince | 
| Definition | A fhirpath expression to evaluate to extract the value into the ifModifiedSince property. If no value is evaluated, then the element is not extracted.  | 
| Short | A fhirpath expression to evaluate to populate the ifModifiedSince property (instant result) | 
| Control | 0..1 | 
| 30. Extension.extension:ifModifiedSince.extension | |
| Control | 0..0 | 
| 32. Extension.extension:ifModifiedSince.url | |
| Fixed Value | ifModifiedSince | 
| 34. Extension.extension:ifModifiedSince.value[x] | |
| Short | Fhirpath Expression value | 
| Control | 1..? | 
| Type | string | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| 36. Extension.extension:ifMatch | |
| Slice Name | ifMatch | 
| Definition | A fhirpath expression to evaluate to extract the value into the ifMatch property. If no value is evaluated, then the element is not extracted.  | 
| Short | A fhirpath expression to evaluate to populate the ifMatch property (string result) | 
| Control | 0..1 | 
| 38. Extension.extension:ifMatch.extension | |
| Control | 0..0 | 
| 40. Extension.extension:ifMatch.url | |
| Fixed Value | ifMatch | 
| 42. Extension.extension:ifMatch.value[x] | |
| Short | Fhirpath Expression value | 
| Control | 1..? | 
| Type | string | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| 44. Extension.extension:ifNoneExist | |
| Slice Name | ifNoneExist | 
| Definition | A fhirpath expression to evaluate to extract the value into the ifNoneExist property. If no value is evaluated, then the element is not extracted.  | 
| Short | A fhirpath expression to evaluate to populate the ifNoneExist property (string result) | 
| Control | 0..1 | 
| 46. Extension.extension:ifNoneExist.extension | |
| Control | 0..0 | 
| 48. Extension.extension:ifNoneExist.url | |
| Fixed Value | ifNoneExist | 
| 50. Extension.extension:ifNoneExist.value[x] | |
| Short | Fhirpath Expression value | 
| Control | 1..? | 
| Type | string | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| 52. Extension.url | |
| Fixed Value | http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-definitionExtract | 
| 54. Extension.value[x] | |
| Control | 0..0 | 
Guidance on how to interpret the contents of this table can be foundhere
| 0. Extension | |
| Definition | Specifies the resource type/profile for the definition based extraction of a resource and optionally the   | 
| Short | Details for a definition based resource extraction | 
| Control | 0..* This element is affected by the following invariants: ele-1  | 
| Is Modifier | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))ext-1: Must have either extensions or value[x], not both ( extension.exists() != value.exists()) | 
| 2. Extension.id | |
| Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.  | 
| Short | Unique id for inter-element referencing | 
| Control | 0..1 | 
| Type | string | 
| Is Modifier | false | 
| XML Format | In the XML format, this property is represented as an attribute. | 
| Summary | false | 
| 4. Extension.extension | |
| Definition | An Extension  | 
| Short | Extension | 
| Control | 1..* | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))ext-1: Must have either extensions or value[x], not both ( extension.exists() != value.exists()) | 
| Slicing | This element introduces a set of slices on Extension.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators: | 
| 6. Extension.extension:definition | |
| Slice Name | definition | 
| Definition | The resource type/profile canonical Url defining the resource type to be extracted.  | 
| Short | Canonical URL of Resource type or profile to extract | 
| Comments | The canonical URL for a base resource can be used if a specific profile is not required, e.g.  The value used here will be the prefix value (before the #) in any child items  Where a specific profile is used (not the base resource), then this canonical value will be set in the created resource's   | 
| Control | 1..1 | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))ext-1: Must have either extensions or value[x], not both ( extension.exists() != value.exists()) | 
| 8. Extension.extension:definition.id | |
| Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.  | 
| Short | Unique id for inter-element referencing | 
| Control | 0..1 | 
| Type | string | 
| Is Modifier | false | 
| XML Format | In the XML format, this property is represented as an attribute. | 
| Summary | false | 
| 10. Extension.extension:definition.extension | |
| Definition | An Extension  | 
| Short | Extension | 
| Control | 0..0 | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))ext-1: Must have either extensions or value[x], not both ( extension.exists() != value.exists()) | 
| Slicing | This element introduces a set of slices on Extension.extension.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators: | 
| 12. Extension.extension:definition.url | |
| Definition | Source of the definition for the extension code - a logical name or a URL.  | 
| Short | identifies the meaning of the extension | 
| Comments | The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.  | 
| Control | 1..1 | 
| Type | uri | 
| Is Modifier | false | 
| XML Format | In the XML format, this property is represented as an attribute. | 
| Summary | false | 
| Fixed Value | definition | 
| 14. Extension.extension:definition.value[x] | |
| Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).  | 
| Short | Resource Profile canonical URL | 
| Control | 1..1 | 
| Type | canonical | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| Is Modifier | false | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) | 
| 16. Extension.extension:fullUrl | |
| Slice Name | fullUrl | 
| Definition | A fhirpath expression to evaluate to extract the value into the fullUrl property. If no value is evaluated, then the element is not extracted.  | 
| Short | A fhirpath expression to evaluate to populate the fullUrl property in the `Bundle.entry` (uri/string result) | 
| Control | 0..1 | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))ext-1: Must have either extensions or value[x], not both ( extension.exists() != value.exists()) | 
| 18. Extension.extension:fullUrl.id | |
| Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.  | 
| Short | Unique id for inter-element referencing | 
| Control | 0..1 | 
| Type | string | 
| Is Modifier | false | 
| XML Format | In the XML format, this property is represented as an attribute. | 
| Summary | false | 
| 20. Extension.extension:fullUrl.extension | |
| Definition | An Extension  | 
| Short | Extension | 
| Control | 0..0 | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))ext-1: Must have either extensions or value[x], not both ( extension.exists() != value.exists()) | 
| Slicing | This element introduces a set of slices on Extension.extension.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators: | 
| 22. Extension.extension:fullUrl.url | |
| Definition | Source of the definition for the extension code - a logical name or a URL.  | 
| Short | identifies the meaning of the extension | 
| Comments | The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.  | 
| Control | 1..1 | 
| Type | uri | 
| Is Modifier | false | 
| XML Format | In the XML format, this property is represented as an attribute. | 
| Summary | false | 
| Fixed Value | fullUrl | 
| 24. Extension.extension:fullUrl.value[x] | |
| Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).  | 
| Short | Fhirpath Expression value | 
| Control | 1..1 | 
| Type | string | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| Is Modifier | false | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) | 
| 26. Extension.extension:ifNoneMatch | |
| Slice Name | ifNoneMatch | 
| Definition | A fhirpath expression to evaluate to extract the value into the ifNoneMatch property. If no value is evaluated, then the element is not extracted.  | 
| Short | A fhirpath expression to evaluate to populate the ifNoneMatch property (string result) | 
| Control | 0..1 | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))ext-1: Must have either extensions or value[x], not both ( extension.exists() != value.exists()) | 
| 28. Extension.extension:ifNoneMatch.id | |
| Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.  | 
| Short | Unique id for inter-element referencing | 
| Control | 0..1 | 
| Type | string | 
| Is Modifier | false | 
| XML Format | In the XML format, this property is represented as an attribute. | 
| Summary | false | 
| 30. Extension.extension:ifNoneMatch.extension | |
| Definition | An Extension  | 
| Short | Extension | 
| Control | 0..0 | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))ext-1: Must have either extensions or value[x], not both ( extension.exists() != value.exists()) | 
| Slicing | This element introduces a set of slices on Extension.extension.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators: | 
| 32. Extension.extension:ifNoneMatch.url | |
| Definition | Source of the definition for the extension code - a logical name or a URL.  | 
| Short | identifies the meaning of the extension | 
| Comments | The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.  | 
| Control | 1..1 | 
| Type | uri | 
| Is Modifier | false | 
| XML Format | In the XML format, this property is represented as an attribute. | 
| Summary | false | 
| Fixed Value | ifNoneMatch | 
| 34. Extension.extension:ifNoneMatch.value[x] | |
| Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).  | 
| Short | Fhirpath Expression value | 
| Control | 1..1 | 
| Type | string | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| Is Modifier | false | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) | 
| 36. Extension.extension:ifModifiedSince | |
| Slice Name | ifModifiedSince | 
| Definition | A fhirpath expression to evaluate to extract the value into the ifModifiedSince property. If no value is evaluated, then the element is not extracted.  | 
| Short | A fhirpath expression to evaluate to populate the ifModifiedSince property (instant result) | 
| Control | 0..1 | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))ext-1: Must have either extensions or value[x], not both ( extension.exists() != value.exists()) | 
| 38. Extension.extension:ifModifiedSince.id | |
| Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.  | 
| Short | Unique id for inter-element referencing | 
| Control | 0..1 | 
| Type | string | 
| Is Modifier | false | 
| XML Format | In the XML format, this property is represented as an attribute. | 
| Summary | false | 
| 40. Extension.extension:ifModifiedSince.extension | |
| Definition | An Extension  | 
| Short | Extension | 
| Control | 0..0 | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))ext-1: Must have either extensions or value[x], not both ( extension.exists() != value.exists()) | 
| Slicing | This element introduces a set of slices on Extension.extension.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators: | 
| 42. Extension.extension:ifModifiedSince.url | |
| Definition | Source of the definition for the extension code - a logical name or a URL.  | 
| Short | identifies the meaning of the extension | 
| Comments | The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.  | 
| Control | 1..1 | 
| Type | uri | 
| Is Modifier | false | 
| XML Format | In the XML format, this property is represented as an attribute. | 
| Summary | false | 
| Fixed Value | ifModifiedSince | 
| 44. Extension.extension:ifModifiedSince.value[x] | |
| Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).  | 
| Short | Fhirpath Expression value | 
| Control | 1..1 | 
| Type | string | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| Is Modifier | false | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) | 
| 46. Extension.extension:ifMatch | |
| Slice Name | ifMatch | 
| Definition | A fhirpath expression to evaluate to extract the value into the ifMatch property. If no value is evaluated, then the element is not extracted.  | 
| Short | A fhirpath expression to evaluate to populate the ifMatch property (string result) | 
| Control | 0..1 | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))ext-1: Must have either extensions or value[x], not both ( extension.exists() != value.exists()) | 
| 48. Extension.extension:ifMatch.id | |
| Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.  | 
| Short | Unique id for inter-element referencing | 
| Control | 0..1 | 
| Type | string | 
| Is Modifier | false | 
| XML Format | In the XML format, this property is represented as an attribute. | 
| Summary | false | 
| 50. Extension.extension:ifMatch.extension | |
| Definition | An Extension  | 
| Short | Extension | 
| Control | 0..0 | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))ext-1: Must have either extensions or value[x], not both ( extension.exists() != value.exists()) | 
| Slicing | This element introduces a set of slices on Extension.extension.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators: | 
| 52. Extension.extension:ifMatch.url | |
| Definition | Source of the definition for the extension code - a logical name or a URL.  | 
| Short | identifies the meaning of the extension | 
| Comments | The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.  | 
| Control | 1..1 | 
| Type | uri | 
| Is Modifier | false | 
| XML Format | In the XML format, this property is represented as an attribute. | 
| Summary | false | 
| Fixed Value | ifMatch | 
| 54. Extension.extension:ifMatch.value[x] | |
| Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).  | 
| Short | Fhirpath Expression value | 
| Control | 1..1 | 
| Type | string | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| Is Modifier | false | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) | 
| 56. Extension.extension:ifNoneExist | |
| Slice Name | ifNoneExist | 
| Definition | A fhirpath expression to evaluate to extract the value into the ifNoneExist property. If no value is evaluated, then the element is not extracted.  | 
| Short | A fhirpath expression to evaluate to populate the ifNoneExist property (string result) | 
| Control | 0..1 | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))ext-1: Must have either extensions or value[x], not both ( extension.exists() != value.exists()) | 
| 58. Extension.extension:ifNoneExist.id | |
| Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.  | 
| Short | Unique id for inter-element referencing | 
| Control | 0..1 | 
| Type | string | 
| Is Modifier | false | 
| XML Format | In the XML format, this property is represented as an attribute. | 
| Summary | false | 
| 60. Extension.extension:ifNoneExist.extension | |
| Definition | An Extension  | 
| Short | Extension | 
| Control | 0..0 | 
| Type | Extension | 
| Is Modifier | false | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))ext-1: Must have either extensions or value[x], not both ( extension.exists() != value.exists()) | 
| Slicing | This element introduces a set of slices on Extension.extension.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators: | 
| 62. Extension.extension:ifNoneExist.url | |
| Definition | Source of the definition for the extension code - a logical name or a URL.  | 
| Short | identifies the meaning of the extension | 
| Comments | The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.  | 
| Control | 1..1 | 
| Type | uri | 
| Is Modifier | false | 
| XML Format | In the XML format, this property is represented as an attribute. | 
| Summary | false | 
| Fixed Value | ifNoneExist | 
| 64. Extension.extension:ifNoneExist.value[x] | |
| Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).  | 
| Short | Fhirpath Expression value | 
| Control | 1..1 | 
| Type | string | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| Is Modifier | false | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) | 
| 66. Extension.url | |
| Definition | Source of the definition for the extension code - a logical name or a URL.  | 
| Short | identifies the meaning of the extension | 
| Comments | The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.  | 
| Control | 1..1 | 
| Type | uri | 
| Is Modifier | false | 
| XML Format | In the XML format, this property is represented as an attribute. | 
| Summary | false | 
| Fixed Value | http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-definitionExtract | 
| 68. Extension.value[x] | |
| Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).  | 
| Short | Value of extension | 
| Control | 0..0 | 
| Type | Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage, Meta | 
| Is Modifier | false | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| Summary | false | 
| Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) |