# Common Components FHIR Implementation Guide

26.0.0 - Trial

Common Components FHIR Implementation Guide, published by Australian Digital Health Agency. This guide is not an authorized publication; it is the continuous build for version 26.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/AuDigitalHealth/common-components/ and changes regularly. See the Directory of published versions

## Extension: Medication Additional Therapeutic Good Detail String

Official URL: http://digitalhealth.gov.au/fhir/cc/StructureDefinition/medication-additional-therapeutic-good-detail-string | Version: 26.0.0
Draft as of 2026-07-14 | Computable Name: Medication_Additional_Therapeutic_Good_Detail_String
Copyright/Legal: This content is licensed under a Creative Commons Attribution 4.0 International License. See https://creativecommons.org/licenses/by/4.0/

Supplemental descriptive information such as physical appearance or packaging (e.g., 'White, round tablet with ABC123 imprint') captured from CDA manufactured material descriptions.

The purpose of this extension is to retain supplemental therapeutic good descriptive details from CDA manufactured material content that are important for identification but not captured in core Medication elements.

Context of Use

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

- Element ID: `Medication`

Usage info

Usages:

- Examples for this Extension: Medication/medication-cda-extensions-example

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.

- Differential Table
- Snapshot Table
- Statistics/References
- All

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension(4.0.1) | Medication Additional Therapeutic Good Detail String
extension |  | 0..0 |  | Extension
url |  | 1..1 | uri | "http://digitalhealth.gov.au/fhir/cc/StructureDefinition/medication-additional-therapeutic-good-detail-string"
value[x] |  | 0..1 | string | Additional therapeutic good details
Documentation for this format

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension(4.0.1) | Medication Additional Therapeutic Good Detail String Constraints: ext-1
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..0 |  | Extension Slice: Unordered, Open by value:url Constraints: ext-1
url |  | 1..1 | uri | "http://digitalhealth.gov.au/fhir/cc/StructureDefinition/medication-additional-therapeutic-good-detail-string"
value[x] |  | 0..1 | string | Additional therapeutic good details
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type string: Supplemental descriptive information such as physical appearance or packaging (e.g., 'White, round tablet with ABC123 imprint') captured from CDA manufactured material descriptions.

Differential View

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension(4.0.1) | Medication Additional Therapeutic Good Detail String
extension |  | 0..0 |  | Extension
url |  | 1..1 | uri | "http://digitalhealth.gov.au/fhir/cc/StructureDefinition/medication-additional-therapeutic-good-detail-string"
value[x] |  | 0..1 | string | Additional therapeutic good details
Documentation for this format

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension(4.0.1) | Medication Additional Therapeutic Good Detail String Constraints: ext-1
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..0 |  | Extension Slice: Unordered, Open by value:url Constraints: ext-1
url |  | 1..1 | uri | "http://digitalhealth.gov.au/fhir/cc/StructureDefinition/medication-additional-therapeutic-good-detail-string"
value[x] |  | 0..1 | string | Additional therapeutic good details
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type string: Supplemental descriptive information such as physical appearance or packaging (e.g., 'White, round tablet with ABC123 imprint') captured from CDA manufactured material descriptions.

Other representations of profile: CSV, Excel, Schematron

#### Constraints

Id | Grade | Path(s) | Description | Expression
ele-1 | error | Extension, Extension.value[x] | All FHIR elements must have a @value or children | `hasValue() or (children().count() > id.count())`
ext-1 | error | Extension | Must have either extensions or value[x], not both | `extension.exists() != value.exists()`