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SequoiaProjectHealthcareDirectoryImplementationGuideSTU3 - Local Development build (v0.0.1). See the Directory of published versions

Extension: EndpointServiceKey - Detailed Descriptions

Definitions for the endpoint-servicekey extension.

1. Extension

An Extension

Control0..* This element is affected by the following invariants: ele-1
InvariantsDefined on this element
ele-1: All FHIR elements must have a @value or children (: hasValue() | (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (: extension.exists() != value.exists())
2. Extension.id

unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

3. Extension.extension

May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

Alternate Namesextensions, user content

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.

SlicingThis element introduces a set of slices on Extension.extension. The slices are unordered and Open, and can be differentiated using the following discriminators:
  • value @ url
4. Extension.url

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.

Fixed Valuehttps://sequoiaproject.org/fhir/sphd-stu3-internal/StructureDefinition/endpoint-servicekey
5. Extension.value[x]

Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).

[x] NoteSee Choice of Data Types for further information about how to use [x]