This page is part of the FHIR Application Feature Framework Implementation Guide (v1.0.0-ballot: STU 1 Ballot 1) based on FHIR (HL7® FHIR® Standard) R4. . For a full list of available versions, see the Directory of published versions
Page standards status: Trial-use | Maturity Level: 1 |
Definitions for the feature extension.
Guidance on how to interpret the contents of this table can be found here
0. Extension | |
Definition | This extension documents the features of a system using code/value pairs |
2. Extension.extension | |
Control | 2..? |
4. Extension.extension:code | |
Slice Name | code |
Control | 1..1 |
Must Support | true |
6. Extension.extension:code.extension | |
Control | 0..0 |
8. Extension.extension:code.url | |
Fixed Value | code |
10. Extension.extension:code.value[x] | |
Control | 1..? |
Binding | Unless not suitable, these codes SHALL be taken from Capability Feature VS (extensible to http://hl7.org/fhir/uv/application-feature/ValueSet/capability-feature-vs ) |
Type | CodeableConcept |
[x] Note | SeeChoice of Data Typesfor further information about how to use [x] |
12. Extension.extension:context | |
Slice Name | context |
Control | 0..* |
Must Support | true |
14. Extension.extension:context.extension | |
Control | 0..0 |
16. Extension.extension:context.url | |
Fixed Value | context |
18. Extension.extension:context.value[x] | |
Short | The context of the feature, if not implied by the extension's location in the CapabilityStatement |
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:value | |
Slice Name | value |
Control | 1..* |
Must Support | true |
22. Extension.extension:value.extension | |
Control | 0..0 |
24. Extension.extension:value.url | |
Fixed Value | value |
26. Extension.extension:value.value[x] | |
Control | 1..? |
Type | Choice of: boolean, string, CodeableConcept |
[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 |
Slicing | This element introduces a set of slices on Extension.extension.value[x] . The slices areUnordered and Open, and can be differentiated using the following discriminators: |
28. Extension.extension:value.value[x]:valueCodeableConcept | |
Slice Name | valueCodeableConcept |
Control | 0..1 |
Binding | Unless not suitable, these codes SHALL be taken from Capability Feature Value VS (extensible to http://hl7.org/fhir/uv/application-feature/ValueSet/capability-feature-value-vs ) |
Type | CodeableConcept |
[x] Note | SeeChoice of Data Typesfor further information about how to use [x] |
30. Extension.url | |
Fixed Value | http://hl7.org/fhir/uv/application-feature/StructureDefinition/feature |
32. Extension.value[x] | |
Control | 0..0 |
Guidance on how to interpret the contents of this table can be found here
0. Extension | |
Definition | This extension documents the features of a system using code/value pairs Optional Extension Element - found in all resources. |
Short | ExtensionOptional 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 | 20..* |
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:code | |
Slice Name | code |
Definition | An Extension |
Short | ExtensionAdditional content defined by implementations |
Control | 10..1* |
Type | Extension |
Is Modifier | false |
Must Support | true |
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:code.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:code.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 | code |
10. Extension.extension:code.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 | 10..1 |
Binding | Unless not suitable, these codes SHALL be taken from For codes, see Capability Feature VS (extensible to http://hl7.org/fhir/uv/application-feature/ValueSet/capability-feature-vs ) |
Type | CodeableConcept, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, 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 |
Summary | false |
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) |
12. Extension.extension:context | |
Slice Name | context |
Definition | An Extension |
Short | ExtensionAdditional content defined by implementations |
Control | 0..* |
Type | Extension |
Is Modifier | false |
Must Support | true |
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:context.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:context.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 | context |
18. Extension.extension:context.value[x] | |
Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list). |
Short | The context of the feature, if not implied by the extension's location in the CapabilityStatementValue 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:value | |
Slice Name | value |
Definition | An Extension |
Short | ExtensionAdditional content defined by implementations |
Control | 10..* |
Type | Extension |
Is Modifier | false |
Must Support | true |
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:value.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:value.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 | value |
26. Extension.extension:value.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 | 10..1 |
Type | Choice of: boolean, string, CodeableConcept, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, 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())) |
Slicing | This element introduces a set of slices on Extension.extension.value[x] . The slices areUnordered and Open, and can be differentiated using the following discriminators: |
28. Extension.extension:value.value[x]:valueCodeableConcept | |
Slice Name | valueCodeableConcept |
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..1 |
Binding | Unless not suitable, these codes SHALL be taken from For codes, see Capability Feature Value VS (extensible to http://hl7.org/fhir/uv/application-feature/ValueSet/capability-feature-value-vs ) |
Type | CodeableConcept, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, 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 |
Summary | false |
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) |
30. 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/application-feature/StructureDefinition/feature |
32. 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 found here
0. Extension | |
Definition | This extension documents the features of a system using code/value pairs |
Short | Extension |
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 | 2..* |
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:code | |
Slice Name | code |
Definition | An Extension |
Short | Extension |
Control | 1..1 |
Type | Extension |
Is Modifier | false |
Must Support | true |
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:code.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:code.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:code.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 | code |
14. Extension.extension:code.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 | 1..1 |
Binding | Unless not suitable, these codes SHALL be taken from Capability Feature VS (extensible to http://hl7.org/fhir/uv/application-feature/ValueSet/capability-feature-vs ) |
Type | CodeableConcept |
[x] Note | SeeChoice of Data Typesfor further information about how to use [x] |
Is Modifier | false |
Summary | false |
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()) ) |
16. Extension.extension:context | |
Slice Name | context |
Definition | An Extension |
Short | Extension |
Control | 0..* |
Type | Extension |
Is Modifier | false |
Must Support | true |
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:context.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:context.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:context.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 | context |
24. Extension.extension:context.value[x] | |
Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list). |
Short | The context of the feature, if not implied by the extension's location in the CapabilityStatement |
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:value | |
Slice Name | value |
Definition | An Extension |
Short | Extension |
Control | 1..* |
Type | Extension |
Is Modifier | false |
Must Support | true |
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:value.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:value.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:value.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 | value |
34. Extension.extension:value.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 | 1..1 |
Type | Choice of: boolean, string, CodeableConcept |
[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()) ) |
Slicing | This element introduces a set of slices on Extension.extension.value[x] . The slices areUnordered and Open, and can be differentiated using the following discriminators: |
36. Extension.extension:value.value[x]:valueCodeableConcept | |
Slice Name | valueCodeableConcept |
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..1 |
Binding | Unless not suitable, these codes SHALL be taken from Capability Feature Value VS (extensible to http://hl7.org/fhir/uv/application-feature/ValueSet/capability-feature-value-vs ) |
Type | CodeableConcept |
[x] Note | SeeChoice of Data Typesfor further information about how to use [x] |
Is Modifier | false |
Summary | false |
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()) ) |
38. 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/application-feature/StructureDefinition/feature |
40. 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()) ) |