Name	Flags	Card.	Type	Description & Constraints
DocumentReference	TU		DomainResource	A reference to a document Elements defined in Ancestors: id, meta, implicitRules, language, text, contained, extension, modifierExtension
masterIdentifier	Σ	0..1	Identifier	Master Version Specific Identifier
identifier	Σ	0..*	Identifier	Other identifiers for the document
status	?! Σ	1..1	code	current | superseded | entered-in-error DocumentReferenceStatus ( Required)
docStatus	Σ	0..1	code	preliminary | final | amended | entered-in-error CompositionStatus ( Required)
type	Σ	0..1	CodeableConcept	Kind of document (LOINC if possible) Document Type Value Set ( Preferred)
category	Σ	0..*	CodeableConcept	Categorization of document Document Class Value Set ( Example)
subject	Σ	0..1	Reference( Patient | Practitioner | Group | Device)	Who/what is the subject of the document
date	Σ	0..1	instant	When this document reference was created
author	Σ	0..*	Reference( Practitioner | PractitionerRole | Organization | Device | Patient | RelatedPerson)	Who and/or what authored the document
authenticator		0..1	Reference( Practitioner | PractitionerRole | Organization)	Who/what authenticated the document
custodian		0..1	Reference( Organization)	Organization which maintains the document
relatesTo	Σ	0..*	BackboneElement	Relationships to other documents
code	Σ	1..1	code	replaces | transforms | signs | appends DocumentRelationshipType ( Required)
target	Σ	1..1	Reference( DocumentReference)	Target of the relationship
description	Σ	0..1	string	Human-readable description
securityLabel	Σ	0..*	CodeableConcept	Document security-tags SecurityLabels ( Extensible)
content	Σ	1..*	BackboneElement	Document referenced
attachment	Σ	1..1	Attachment	Where to access the document
format	Σ	0..1	Coding	Format/content rules for the document DocumentReference Format Code Set ( Preferred)
context	Σ	0..1	BackboneElement	Clinical context of document
encounter		0..*	Reference( Encounter | EpisodeOfCare)	Context of the document content
event		0..*	CodeableConcept	Main clinical acts documented v3 Code System ActCode ( Example)
period	Σ	0..1	Period	Time of service that is being documented
facilityType		0..1	CodeableConcept	Kind of facility where patient was seen Facility Type Code Value Set ( Example)
practiceSetting		0..1	CodeableConcept	Additional details about where the content was created (e.g. clinical specialty) Practice Setting Code Value Set ( Example)
sourcePatientInfo		0..1	Reference( Patient)	Patient demographics from source
related		0..*	Reference( Any)	Related identifiers or resources
Documentation for this format