Generated Narrative: StructureDefinition derivation-reference Name Flags Card. Type Description & Constraints Extension C 0..* Extension References a location within a set of source text from which the discrete information described by this Resource/Element was extracted. Constraints: der-1 #xD; Slices for extension Content/Rules for all slices #xD; extension:reference 0..1 Extension Source reference. #xD; extension 0..0 #xD; url 1..1 uri "reference" #xD; value[x] 1..1 Reference() Value of extension #xD; extension:path 0..1 Extension Element containing text. #xD; extension 0..0 #xD; url 1..1 uri "path" #xD; value[x] 1..1 string Value of extension #xD; extension:offset 0..1 Extension Starting position. #xD; extension 0..0 #xD; url 1..1 uri "offset" #xD; value[x] 1..1 integer Value of extension #xD; extension:length 0..1 Extension Number of characters. #xD; extension 0..0 #xD; url 1..1 uri "length" #xD; value[x] 1..1 integer Value of extension #xD; url 1..1 uri "http://hl7.org/fhir/StructureDefinition/derivation-reference" #xD; value[x] 0..0 #xD; Documentation for this format
References a location within a set of source text from which the discrete information described by this Resource/Element was extracted.
All FHIR elements must have a @value or children
hasValue() or (children().count() > id.count())
Must have either extensions or value[x], not both
Cannot have length if offset is missing.
extension.where(url='length').exists() implies extension.where(url='offset').exists()
Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Extensions are always sliced by (at least) url
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 managable, 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.
Source of the definition for the extension code - a logical name or a URL.
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.
Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/R5/extensibility.html) for a list).
Corresponds to the element within the resource containing the text.
Follows the FHIRPath expression syntax used for OperationOutcome. If not present, then the resource must either be a Binary or a DocumentReference (with a single content element) and the content is the text represented by the instance or the attachment. If the DocumentReference has more than one 'content', then this path element SHALL be present to distinguish which repetition the derivation occurred from.
Indicates the starting position (as a count of characters) within the text where the relevant derivation began.
Indicates the number of characters following the start position/beginning of the document that was used as part of the derivation process.
If not specified, the location at which derivation started is unknown.
If not specified, the location at which derivation ended is unknown.