A COMPOSITION is a container class of archetype. It is commonly used to represent clinical documents, forms or messages in the EHR.
In practical terms archetype classes containing detailed clinical content is added to a COMPOSITION in the same way that paragraphs of content are added to a paper document. Each COMPOSITION archetype has a purpose or intent specified and is comparable to the way that in traditional paper records each section of the health record is identified by a different colored ribbon to assist clinician to find specific types of documents, such as a blue ribbon for Medication Orders and green for Consultation/Progress notes.
It is the unit of contribution (and therefore committal and communication) to an electronic health record (EHR).
Remember: "You cannot save less than a Composition”
All openEHR data is transferred between EHRs as Compositions.
A COMPOSITION can contain SECTION and ENTRY archetypes (OBSERVATIONs, EVALUATIONs, INSTRUCTIONs, ACTIONs and ADMIN ENTRYs).
Examples: Consultation note; Prescription; Care Plan; and Medication List