Medication Prescription and Dispense (MPD)
1.0.0-comment-3 - ballot

Medication Prescription and Dispense (MPD), published by Integrating the Healthcare Enterprise (IHE). This guide is not an authorized publication; it is the continuous build for version 1.0.0-comment-3 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/IHE/pharm-mpd/tree/98-pc-clarify-the-transaction-pharm-5 and changes regularly. See the Directory of published versions

## Extension: Medication - Unit of presentation

Official URL: https://profiles.ihe.net/PHARM/MPD/StructureDefinition/ihe-ext-medication-unitofpresentation | Version: 1.0.0-comment-3
Active as of 2026-04-23 | Computable Name: MedicationUnitOfPresentation
Copyright/Legal: IHE http://www.ihe.net/Governance/#Intellectual_Property

Unit of presentation, typically describing the smallest countable package item (e.g tablet, vial, ampoule, etc). Unit of presentation is also often used in describing pack size and the denominator of strength. If the size of presentation unit is relevant, it should be described in sizeOfItem extension.

Context of Use

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

- Element ID: `Medication`

Usage info

Usages:

- Use this Extension: IHE Medication
- Examples for this Extension: Medication/01C-Cefuroxime1500Branded, Medication/01D-Cefuroxime750Branded, Medication/02A1-CanifugCremolumCreamItem, Medication/02A2-CanifugCremolumPessaryItem... Show 3 more, Medication/03B-VitaminBComplexBranded, Medication/04-FirmagonBranded and Medication/05A-Tilidin-Branded

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 | Medication - Unit of presentation
extension |  | 0..0 |  | Extension
url |  | 1..1 | uri | "https://profiles.ihe.net/PHARM/MPD/StructureDefinition/ihe-ext-medication-unitofpresentation"
value[x] |  | 1..1 | CodeableConcept | Value of extension Binding: UnitOfPresentation (example)
Documentation for this format

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Medication - Unit of presentation
id |  | 0..1 | id | Unique id for inter-element referencing
extension |  | 0..0 |  | Extension Slice: Unordered, Open by value:url
url |  | 1..1 | uri | "https://profiles.ihe.net/PHARM/MPD/StructureDefinition/ihe-ext-medication-unitofpresentation"
value[x] |  | 1..1 | CodeableConcept | Value of extension Binding: UnitOfPresentation (example)
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type CodeableConcept: Unit of presentation, typically describing the smallest countable package item (e.g tablet, vial, ampoule, etc). Unit of presentation is also often used in describing pack size and the denominator of strength. If the size of presentation unit is relevant, it should be described in sizeOfItem extension.

Differential View

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Medication - Unit of presentation
extension |  | 0..0 |  | Extension
url |  | 1..1 | uri | "https://profiles.ihe.net/PHARM/MPD/StructureDefinition/ihe-ext-medication-unitofpresentation"
value[x] |  | 1..1 | CodeableConcept | Value of extension Binding: UnitOfPresentation (example)
Documentation for this format

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Medication - Unit of presentation
id |  | 0..1 | id | Unique id for inter-element referencing
extension |  | 0..0 |  | Extension Slice: Unordered, Open by value:url
url |  | 1..1 | uri | "https://profiles.ihe.net/PHARM/MPD/StructureDefinition/ihe-ext-medication-unitofpresentation"
value[x] |  | 1..1 | CodeableConcept | Value of extension Binding: UnitOfPresentation (example)
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type CodeableConcept: Unit of presentation, typically describing the smallest countable package item (e.g tablet, vial, ampoule, etc). Unit of presentation is also often used in describing pack size and the denominator of strength. If the size of presentation unit is relevant, it should be described in sizeOfItem extension.

Other representations of profile: CSV, Excel, Schematron

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
Extension.value[x] | Base | example | Unit Of Presentation | 📦5.0.0 | FHIR Std.

#### 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()`