This page is part of the FHIR Specification (v3.3.0: R4 Ballot 2). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions . Page versions: R4B R4 R3
Vocabulary Work Group | Maturity Level: 1 | Informative | Use Context: Any |
Detailed Descriptions for the elements in the extension.
Extension | |
Element Id | Extension |
Definition | Information on changes made to the Value Set Definition over time, and also has a contained audit trail of all such changes. |
Control | 0..* This element is affected by the following invariants: ele-1 |
Invariants | Defined on this element ele-1: All FHIR elements must have a @value or children (xpath: @value|f:*|h:div) ext-1: Must have either extensions or value[x], not both (xpath: exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])) |
Extension.id | |
Element Id | 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. |
Control | 0..1 |
Type | string |
Extension.extension | |
Element Id | Extension.extension |
Definition | 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. |
Control | 0..* |
Type | Extension |
Alternate Names | extensions, user content |
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. |
Slicing | This element introduces a set of slices. The slicing rules are:
|
Extension.extension(name) | |
Element Id | Extension.extension:name |
Definition | Label for a set of entries, such as a version. |
Control | 0..1 |
Type | Extension |
Comments | Typically, a value set will have a set of history entries for each major publication milestone. |
Extension.extension.id | |
Element Id | Extension.extension:name.id |
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. |
Control | 0..1 |
Type | string |
Extension.extension.extension | |
Element Id | Extension.extension:name.extension |
Definition | An Extension |
Control | 0..0 |
Type | Extension |
Slicing | This element introduces a set of slices. The slicing rules are:
|
Extension.extension.url | |
Element Id | Extension.extension:name.url |
Definition | Source of the definition for the extension code - a logical name or a URL. |
Control | 1..1 |
Type | uri |
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. |
Fixed Value | name |
Extension.extension.valueString | |
Element Id | Extension.extension:name.valueString |
Definition | Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list). |
Control | 0..1 |
Type | string |
Extension.extension(revision) | |
Element Id | Extension.extension:revision |
Definition | A list of specific changes, who made them and when. |
Control | 0..* |
Type | Extension |
Extension.extension.id | |
Element Id | Extension.extension:revision.id |
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. |
Control | 0..1 |
Type | string |
Extension.extension.extension | |
Element Id | Extension.extension:revision.extension |
Definition | An Extension |
Control | 0..0 |
Type | Extension |
Slicing | This element introduces a set of slices. The slicing rules are:
|
Extension.extension.extension(date) | |
Element Id | Extension.extension:revision.extension:date |
Definition | Date the change took place. |
Control | 1..1 |
Type | Extension |
Extension.extension.extension.id | |
Element Id | Extension.extension:revision.extension:date.id |
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. |
Control | 0..1 |
Type | string |
Extension.extension.extension.extension | |
Element Id | Extension.extension:revision.extension:date.extension |
Definition | An Extension |
Control | 0..0 |
Type | Extension |
Slicing | This element introduces a set of slices. The slicing rules are:
|
Extension.extension.extension.url | |
Element Id | Extension.extension:revision.extension:date.url |
Definition | Source of the definition for the extension code - a logical name or a URL. |
Control | 1..1 |
Type | uri |
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. |
Fixed Value | date |
Extension.extension.extension.valueDateTime | |
Element Id | Extension.extension:revision.extension:date.valueDateTime |
Definition | Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list). |
Control | 0..1 |
Type | dateTime |
Extension.extension.extension(id) | |
Element Id | Extension.extension:revision.extension:id |
Definition | Unique id for the specific change. |
Control | 1..1 |
Type | Extension |
Extension.extension.extension.id | |
Element Id | Extension.extension:revision.extension:id.id |
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. |
Control | 0..1 |
Type | string |
Extension.extension.extension.extension | |
Element Id | Extension.extension:revision.extension:id.extension |
Definition | An Extension |
Control | 0..0 |
Type | Extension |
Slicing | This element introduces a set of slices. The slicing rules are:
|
Extension.extension.extension.url | |
Element Id | Extension.extension:revision.extension:id.url |
Definition | Source of the definition for the extension code - a logical name or a URL. |
Control | 1..1 |
Type | uri |
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. |
Fixed Value | id |
Extension.extension.extension.valueString | |
Element Id | Extension.extension:revision.extension:id.valueString |
Definition | Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list). |
Control | 0..1 |
Type | string |
Extension.extension.extension(author) | |
Element Id | Extension.extension:revision.extension:author |
Definition | Person or device responsible for the change. |
Control | 1..1 |
Type | Extension |
Extension.extension.extension.id | |
Element Id | Extension.extension:revision.extension:author.id |
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. |
Control | 0..1 |
Type | string |
Extension.extension.extension.extension | |
Element Id | Extension.extension:revision.extension:author.extension |
Definition | An Extension |
Control | 0..0 |
Type | Extension |
Slicing | This element introduces a set of slices. The slicing rules are:
|
Extension.extension.extension.url | |
Element Id | Extension.extension:revision.extension:author.url |
Definition | Source of the definition for the extension code - a logical name or a URL. |
Control | 1..1 |
Type | uri |
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. |
Fixed Value | author |
Extension.extension.extension.valueString | |
Element Id | Extension.extension:revision.extension:author.valueString |
Definition | Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list). |
Control | 0..1 |
Type | string |
Extension.extension.extension(notes) | |
Element Id | Extension.extension:revision.extension:notes |
Definition | Description of exactly what was changed and how. |
Control | 0..1 |
Type | Extension |
Extension.extension.extension.id | |
Element Id | Extension.extension:revision.extension:notes.id |
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. |
Control | 0..1 |
Type | string |
Extension.extension.extension.extension | |
Element Id | Extension.extension:revision.extension:notes.extension |
Definition | An Extension |
Control | 0..0 |
Type | Extension |
Slicing | This element introduces a set of slices. The slicing rules are:
|
Extension.extension.extension.url | |
Element Id | Extension.extension:revision.extension:notes.url |
Definition | Source of the definition for the extension code - a logical name or a URL. |
Control | 1..1 |
Type | uri |
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. |
Fixed Value | notes |
Extension.extension.extension.valueString | |
Element Id | Extension.extension:revision.extension:notes.valueString |
Definition | Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list). |
Control | 0..1 |
Type | string |
Extension.extension.url | |
Element Id | Extension.extension:revision.url |
Definition | Source of the definition for the extension code - a logical name or a URL. |
Control | 1..1 |
Type | uri |
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. |
Fixed Value | revision |
Extension.extension.value[x] | |
Element Id | Extension.extension:revision.value[x] |
Definition | Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list). |
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, ParameterDefinition, DataRequirement, RelatedArtifact, ContactDetail, Contributor, TriggerDefinition, UsageContext, Dosage |
[x] Note | See Choice of Data Types for further information about how to use [x] |
Extension.url | |
Element Id | Extension.url |
Definition | Source of the definition for the extension code - a logical name or a URL. |
Control | 1..1 |
Type | uri |
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. |
Fixed Value | http://hl7.org/fhir/StructureDefinition/codesystem-history |
Extension.value[x] | |
Element Id | Extension.value[x] |
Definition | Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list). |
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, ParameterDefinition, DataRequirement, RelatedArtifact, ContactDetail, Contributor, TriggerDefinition, UsageContext, Dosage |
[x] Note | See Choice of Data Types for further information about how to use [x] |