Extension: Maximum Value Set (when strength = extensible)

STU 3 Ballot

This page is part of the FHIR Specification (v1.6.0: STU 3 Ballot 4). 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 R3 R2

Extension Maximum Value Set (when strength = extensible) - Detailed Descriptions

Detailed Descriptions for the elements in the extension.

Extension
Definition	The maximum allowable value set, for use when the binding strength is 'extensible'. This value set is the value set from which extensions can be taken from.
Control	0..1 This element is affected by the following invariants: ele-1
Comments	Typically, this will be an entire code system, e.g. SNOMED CT.
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
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)
Definition	An Extension
Control	0..0
Type	Extension
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/elementdefinition-maxValueSet
Extension.valueReference
Definition	A value set specifies a set of codes drawn from one or more code systems.
Control	1..1
Type	Reference(ValueSet)