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Base StructureDefinition for Annotation Type: A text note which also contains information about who made the statement and when.



Unique id for inter-element referencing


Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.


Additional content defined by implementations


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.

author[x]Reference< Practitioner | Patient | RelatedPerson | Organization >, string

Individual responsible for the annotation


The individual responsible for making the annotation.

Organization is used when there's no need for specific attribution as to who made the comment.


When the annotation was made


Indicates when this particular annotation was made.


The annotation - text content (as markdown)


The text of the annotation in markdown format.