Dissolve-E: AWMF Guideline Registry
0.2.0 - ci-build

Dissolve-E: AWMF Guideline Registry - Local Development build (v0.2.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions

Extension: Medical Subject

Official URL: http://fhir.awmf.org/awmf.ig/StructureDefinition/ext-medical-subject Version: 0.2.0
Draft as of 2026-01-29 Computable Name: MedicalSubject

An extension to specify medical subjects related to an organization.

Context of Use

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

Guidance

This extension specifies medical subjects (specific topic areas) related to an organization.

Overview

Medical subjects represent specific fields or topics within broader categories. For example, while a medical subject category might be "Surgical Disciplines", specific medical subjects could be "Cardiac Surgery" or "Orthopedic Surgery".

Context

This extension can be applied to Organization resources.

Value Type

The value is a CodeableConcept that can contain coded values or free text:

* value[x] only CodeableConcept
* valueCodeableConcept 1..1
  • medicalSubjectCategory – Broader discipline categories

Example Usage

// Using free text (when no standard code exists):
* extension[medicalSubject][+].valueCodeableConcept.text = "Anesthesiology and Intensive Care Medicine"

// Using coded value:
* extension[medicalSubject][+].valueCodeableConcept.coding
  * system = "http://example.org/medical-subjects"
  * code = #anesthesiology
  * display = "Anesthesiology"

This profile of a FHIR Extension is derived from the Extension FHIR resource.

Usage info

Usages:

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.

This structure is derived from Extension

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension Medical Subject
... extension 0..0 Extension
... url 1..1 uri "http://fhir.awmf.org/awmf.ig/StructureDefinition/ext-medical-subject"
... value[x] 1..1 CodeableConcept Value of extension

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension Medical Subject
... id 0..1 id Unique id for inter-element referencing
... extension 0..0 Extension
Slice: Unordered, Open by value:url
... url Σ 1..1 uri "http://fhir.awmf.org/awmf.ig/StructureDefinition/ext-medical-subject"

doco Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type CodeableConcept: An extension to specify medical subjects related to an organization.

Differential View

This structure is derived from Extension

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension Medical Subject
... extension 0..0 Extension
... url 1..1 uri "http://fhir.awmf.org/awmf.ig/StructureDefinition/ext-medical-subject"
... value[x] 1..1 CodeableConcept Value of extension

doco Documentation for this format

Snapshot View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension Medical Subject
... id 0..1 id Unique id for inter-element referencing
... extension 0..0 Extension
Slice: Unordered, Open by value:url
... url Σ 1..1 uri "http://fhir.awmf.org/awmf.ig/StructureDefinition/ext-medical-subject"

doco Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type CodeableConcept: An extension to specify medical subjects related to an organization.

 

Other representations of profile: CSV, Excel, Schematron

Constraints

Id Grade Path(s) Description Expression
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()