Extension: Implemented CDE

STU 3 Candidate

This page is part of the FHIR Specification (v1.4.0: STU 3 Ballot 3). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions

Extension Implemented CDE - Detailed Descriptions

Detailed Descriptions for the elements in the extension.

Extension
Definition	A reference to the Data Element that corresponds to the question text and answer constraints for this question.
Control	0..1
Type	Extension
Comments	If a code applies to a question, that code should still be conveyed on the question, even if the same code is also referenced as a DataElement.code in the referenced data element. This extension must not be used in place of specifying the Questionnaire.item.concept element.
Invariants	Defined on this element inv-9: Data Element references can't be specified for "display" items (xpath: not(parent::*/f:type/@value='display'))
Extension.id
Definition	unique id for the element within a resource (for internal references).
Control	0..1
Type	id
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 should be version specific. This will ideally be the URI for the Resource Profile defining the extension, with the code for the extension after a #.
Fixed Value	http://hl7.org/fhir/StructureDefinition/questionnaire-deReference
Extension.valueReference
Definition	Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).
Control	1..1
Type	Reference(DataElement)