Terminology Change Set Exchange, published by HL7 International / Terminology Infrastructure. This guide is not an authorized publication; it is the continuous build for version 1.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/termchangeset-ig/ and changes regularly. See the Directory of published versions

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Extension: Extends CodeSystem

Official URL: http://hl7.org/fhir/uv/termchangeset/StructureDefinition/extends-codesystem				Version: 1.0.0
Standards status: Draft			Maturity Level: 0	Computable Name: ExtendsCodeSystem

Extends CodeSystem contains a reference to a source terminology, for which a CodeSystem resource is intended to contain additional Concepts

Context of Use

This extension may be used on the following element(s)

• Element ID: CodeSystem

Usage info

Usages:

• Use this Extension: CodeSystem Change Set (CodeSystem)

You can also check for usages in the FHIR IG Statistics

Formal Views of Extension Content

Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work.

 

Other representations of profile: CSV, Excel, Schematron

Constraints

Id	Grade	Path(s)	Details	Requirements
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both : extension.exists() != value.exists()