Name	Flags	Card.	Type	Description & Constraints
Composition			DomainResource	A set of resources composed into a single coherent clinical statement with clinical attestation
identifier	Σ	0..1	Identifier	Logical identifier of composition (version-independent)
date	Σ	1..1	dateTime	Composition editing time
type	Σ	1..1	CodeableConcept	Kind of composition (LOINC if possible) FHIR Document Type Codes ( Preferred)
class	Σ	0..1	CodeableConcept	Categorization of Composition FHIR Document Class Codes ( Example)
title	Σ	1..1	string	Human Readable name/title
status	?! Σ	1..1	code	preliminary | final | amended | entered-in-error CompositionStatus ( Required)
confidentiality	?! Σ	0..1	code	As defined by affinity domain ConfidentialityClassification ( Required)
subject	Σ	1..1	Reference( Any)	Who and/or what the composition is about
author	Σ	1..*	Reference( Practitioner | Device | Patient | RelatedPerson)	Who and/or what authored the composition
attester	Σ	0..*	BackboneElement	Attests to accuracy of composition
mode	Σ	1..*	code	personal | professional | legal | official CompositionAttestationMode ( Required)
time	Σ	0..1	dateTime	When composition attested
party	Σ	0..1	Reference( Patient | Practitioner | Organization)	Who attested the composition
custodian	Σ	0..1	Reference( Organization)	Organization which maintains the composition
event	Σ	0..*	BackboneElement	The clinical service(s) being documented
code	Σ	0..*	CodeableConcept	Code(s) that apply to the event being documented v3 Code System ActCode ( Example)
period	Σ	0..1	Period	The period covered by the documentation
detail	Σ	0..*	Reference( Any)	The event(s) being documented
encounter	Σ	0..1	Reference( Encounter)	Context of the Composition
section	I	0..*	BackboneElement	Composition is broken into sections A section must at least one of text, entries, or sub-sections A section can only have an emptyReason if it is empty
title		0..1	string	Label for section (e.g. for ToC)
code		0..1	CodeableConcept	Classification of section (recommended) Document Section Codes ( Example)
text	I	0..1	Narrative	Text summary of the section, for human interpretation
mode	?! Σ	0..1	code	working | snapshot | changes ListMode ( Required)
orderedBy		0..1	CodeableConcept	Order of section entries List Order Codes ( Preferred)
entry	I	0..*	Reference( Any)	A reference to data that supports this section
emptyReason	I	0..1	CodeableConcept	Why the section is empty List Empty Reasons ( Preferred)
section	I	0..*	see section	Nested Section
Documentation for this format