This CodeSystem has may be new or has been amended since the last ballot. Users are advised to review all content carefully. Details of the changes can be found within the UK Core Version History.
There are no (further) constraints on this element
Element id
Extension.extension
Short description
Additional content defined by implementations
Alternate names
extensions, user content
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.
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.
Source of the definition for the extension code - a logical name or a URL.
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.
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.
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.
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.
<descriptionvalue="This supports the episodicity status of a condition." />
<purposevalue="This extension extends the Condition resource to support the exchange of information describing the episodicity status of a condition." />
Condition episode- An example to illustrate the extension which is used to indicate the episodicity status of a condition. Extension-UKCore-ConditionEpisode-Example
The datatype of this extension was changed from valueCode in UK Core STU1 Sequence, to valueCodeableConcept , as a result of the UK Core STU2 Sequence ballot reconciliation actions.