This page is part of the FHIR Specification (v3.5.0: R4 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
| FHIR Infrastructure Work Group | Maturity Level: 1 | Informative | Use Context: Any | 
Detailed Descriptions for the elements in the extension.
| Extension | |||||||||||||
| Element Id | Extension | ||||||||||||
| Definition | Defines the level of expectation associated with a given system capability.  | ||||||||||||
| Control | 0..1 This element is affected by the following invariants: ele-1 | ||||||||||||
| Comments | If "SHALL NOT" is desired, use the "prohibited" modifier extension. This extension should only be used with CapabilityStatements documenting requirements, not those documenting actual system capabilities.  | ||||||||||||
| Invariants | 
  | ||||||||||||
| Extension.id | |||||||||||||
| Element Id | 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 | |||||||||||||
| Element Id | Extension.extension | ||||||||||||
| Definition | An Extension  | ||||||||||||
| Control | 0..0 | ||||||||||||
| Type | Extension | ||||||||||||
| Slicing | This element introduces a set of slices. The slicing rules are: 
  | ||||||||||||
| Extension.url | |||||||||||||
| Element Id | 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/capabilitystatement-expectation | ||||||||||||
| Extension.valueCode | |||||||||||||
| Element Id | Extension.valueCode | ||||||||||||
| 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 | 0..1 | ||||||||||||
| Terminology Binding | Indicates the degree of adherence to a specified behavior or capability expected for a system to be deemed conformant with a specification. The codes SHALL be taken from ConformanceExpectation  | ||||||||||||
| Type | code | ||||||||||||