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.
<descriptionvalue="Allows the referencing of Patient and RelatedPerson within Specimen.collection." />
<purposevalue="This is a use case from Genomics to backport R5 functionality extending the referencing of Specimen.collection.collector to include Patient and RelatedPerson" />
<shortvalue="Unique id for inter-element referencing" />
<definitionvalue="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
<shortvalue="Additional content defined by implementations" />
<definitionvalue="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." />
<commentvalue="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." />
<shortvalue="identifies the meaning of the extension" />
<definitionvalue="Source of the definition for the extension code - a logical name or a URL." />
<commentvalue="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." />
"description": "Allows the referencing of Patient and RelatedPerson within Specimen.collection.",
"purpose": "This is a use case from Genomics to backport R5 functionality extending the referencing of Specimen.collection.collector to include Patient and RelatedPerson",
"short": "Additional content defined by implementations",
"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.",
"comment": "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.",
"short": "identifies the meaning of the extension",
"definition": "Source of the definition for the extension code - a logical name or a URL.",
"comment": "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.",
Composition Reference - An example to illustrate the pre-adopted R5 element via an extension, which is used to reference a Patient or RelatedPerson within Specimen.collection.collector. Example-UKCore-Specimen-Extension-CollectionCollector
Extension Specific Guidance
Where possible, it is expected that the resource being referenced SHOULD conform to one of the following UK Core profiles: