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
FHIR Infrastructure Work Group | Maturity Level: 1 | Informative | Use Context: Any |
Detailed Descriptions for the elements in the extension.
Extension | |
Element Id | Extension |
Definition | Specifies that a date is relative to some event. The event happens [Duration] after [Event]. |
Control | 0..1 This element is affected by the following invariants: ele-1 |
Comments | This extension is used when a precise date is not known, but rather, the date will be relative to some future event (e.g. Do this 2 weeks after an operation). |
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(event) | |
Element Id | Extension.extension:event |
Definition | The event that the date(time) is relative to. |
Control | 1..1 |
Type | Extension |
Comments | This can be a reference to a particular event, or a kind of event (usually where the kind would not happen very frequently). |
Extension.extension.id | |
Element Id | Extension.extension:event.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:event.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:event.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 | event |
Extension.extension.value[x] | |
Element Id | Extension.extension:event.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 | 1..1 |
Type | Choice of: Reference(Resource), CodeableConcept |
[x] Note | See Choice of Data Types for further information about how to use [x] |
Extension.extension(relationship) | |
Element Id | Extension.extension:relationship |
Definition | Defines the relationship between the event and the date. |
Control | 1..1 |
Type | Extension |
Extension.extension.id | |
Element Id | Extension.extension:relationship.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:relationship.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:relationship.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 | relationship |
Extension.extension.valueCode | |
Element Id | Extension.extension:relationship.valueCode |
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 |
Terminology Binding | Defines the types of relationships between actions The codes SHALL be taken from ActionRelationshipType |
Type | code |
Extension.extension(offset) | |
Element Id | Extension.extension:offset |
Definition | The duration after the event that the date(time) will happen. |
Control | 1..1 |
Type | Extension |
Extension.extension.id | |
Element Id | Extension.extension:offset.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:offset.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:offset.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 | offset |
Extension.extension.valueDuration | |
Element Id | Extension.extension:offset.valueDuration |
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 | Duration |
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/relative-date |
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] |