AU Base Implementation Guide
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AU Base Implementation Guide - Downloaded Version 6.0.1-ci-build See the Directory of published versions

## Extension: Medication Strength

Official URL: http://hl7.org.au/fhir/StructureDefinition/medication-strength | Version: 6.0.1-ci-build
Standards status: Trial-use | Maturity Level: 1 | Computable Name: MedicationStrength
Copyright/Legal: HL7 Australia© 2018+; Licensed Under Creative Commons No Rights Reserved.

This extension applies to the Medication resource and is used to represent the strength of a medication as text. Use this extension for text representation of a medication strength as a whole. Coded representation of medication strength as a whole uses `Medication.code`.

Context of Use

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

- Element ID: `Medication`

### Usage Notes

Profile specific implementation guidance:

- Strength at ingredient level can be surfaced using the existing `Medication.ingredient.strength` element, or the pre-adopted R5 `Medication.ingredient.strength[x]` element if ratio data is unsuitable.

Usage info

Usages:

- Examples for this Extension: Medication/StrengthExtension0 and Medication/StrengthExtension1

You can also check for usages in the FHIR IG Statistics

Changes since version 6.0.0:

- No changes

### 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..1 | Extension | Medication strength
url |  | 1..1 | uri | "http://hl7.org.au/fhir/StructureDefinition/medication-strength"
value[x] |  | 1..1 | string | Value of extension
Documentation for this format

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..1 | Extension | Medication strength
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url
url |  | 1..1 | uri | "http://hl7.org.au/fhir/StructureDefinition/medication-strength"
value[x] |  | 1..1 | string | Value of extension
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type string: This extension applies to the Medication resource and is used to represent the strength of a medication as text. Use this extension for text representation of a medication strength as a whole. Coded representation of medication strength as a whole uses `Medication.code`.

Maturity: 1

Differential View

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..1 | Extension | Medication strength
url |  | 1..1 | uri | "http://hl7.org.au/fhir/StructureDefinition/medication-strength"
value[x] |  | 1..1 | string | Value of extension
Documentation for this format

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..1 | Extension | Medication strength
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url
url |  | 1..1 | uri | "http://hl7.org.au/fhir/StructureDefinition/medication-strength"
value[x] |  | 1..1 | string | Value of extension
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type string: This extension applies to the Medication resource and is used to represent the strength of a medication as text. Use this extension for text representation of a medication strength as a whole. Coded representation of medication strength as a whole uses `Medication.code`.

Maturity: 1

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()`