# Logical Record Architecture for Health and Social Care
## Discharge Summary Release 0.02

Contents
The content of this release is not comprehensive and is not fully validated and must not be used in live system implementations.
# PARTICIPANT Domain Model: ComposerParticipation
A class to represent the involvement of a role (e.g. patient, healthcare professional) as the author or composer of a COMPOSITION. ## Attributes
Name | Data type | Occurs | Description
--- | --- | --- | ---
performer | II.Uuid.Ref | 1..1 | The identity of the agent performing that the function or role.
mode | CS | 0..1 | The mechanism by which that participation was made. The code set for this attribute is defined in EN 13606-3:2008.
healthcare_facility | II.Uuid.Ref | 0..1 | The organisation at which the role was performed.
type | CS | 1..1 | A coded representation of the nature of the involvement (e.g. subject, author, performer) of a role (e.g. patient, healthcare professional).
time | IVL_TS | 0..1 | The point in time or time period when the participation occurred.
clinical_treatment_specialty | CD.CV | 0..1 | The specialty in which the consultant was working during the period of care. [NHS, The Health and Social Care Information Centre Hospital Episode Statistics (HES) Data Dictionary]
## Constraints
Type | Name | Specification
--- | --- | ---
mode LRA vocab | LRA Inv: Type | inv: mode.code.oclIsTypeOf(<a href="$element://{65575965-985B-4e8b-ACC1-1DF71B4E347E}"><font color="#0000ff"><u>LraFunctionalRoleMode</u></font></a>)
type LRA vocab | LRA Inv: Type | inv: type.code.oclIsTypeOf(<a href="$element://{75C40D3A-BFF8-44d1-AAAE-22F3898BBE5A}"><font color="#0000ff"><u>LraParticipationType</u></font></a>)
## Relationships
Name | Class | Occurs | Description
--- | --- | --- | ---
| ComposerRoleChoice2 |  | A class to represent a choice of ROLE classes when a ROLE is being used to describe the details of a Composer (a.k.a. Author).
## ## Reference Model Type ## PARTICIPATION