This page is part of the FHIR Specification (v0.5.0: DSTU 2 Ballot 2). 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
. Page versions: R4B R4 R3 R2

The base definition for elements defined as part of a resource. Data Type elements do not use this type.

Structure
| Name | Flags | Card. | Type | Description & Constraints  | 
|---|---|---|---|---|
|   BackboneElement | Element | Base for elements defined inside a resource | ||
|    modifierExtension | ?! | 0..* | Extension | Extensions that cannot be ignored | 
UML Diagram
XML Template
<BackboneElement xmlns="http://hl7.org/fhir"><!-- from Resource: id, meta, implicitRules, and language --> <modifierExtension><!-- 0..* Extension Extensions that cannot be ignored --></modifierExtension> </BackboneElement>
JSON Template
{ // from Element: extension
  (Modifier Extensions - see JSON page)
}
  // from Element: extension
  (Modifier Extensions - see JSON page)
}
   Structure
| Name | Flags | Card. | Type | Description & Constraints  | 
|---|---|---|---|---|
|   BackboneElement | Element | Base for elements defined inside a resource | ||
|    modifierExtension | ?! | 0..* | Extension | Extensions that cannot be ignored | 
XML Template
<BackboneElement xmlns="http://hl7.org/fhir"><!-- from Resource: id, meta, implicitRules, and language --> <modifierExtension><!-- 0..* Extension Extensions that cannot be ignored --></modifierExtension> </BackboneElement>