Name	Flags	Card.	Type	Description & Constraints
DocumentReference	TU		DomainResource	A reference to a document + Warning: facilityType SHALL only be present if context is not an encounter + Warning: practiceSetting SHALL only be present if context is not present Elements defined in Ancestors: id, meta, implicitRules, language, text, contained, extension, modifierExtension
identifier	Σ	0..*	Identifier	Business identifiers for the document
version	Σ	0..1	string	An explicitly assigned identifier of a variation of the content in the DocumentReference
basedOn		0..*	Reference( Appointment | AppointmentResponse | CarePlan | Claim | CommunicationRequest | Contract | CoverageEligibilityRequest | DeviceRequest | EnrollmentRequest | ImmunizationRecommendation | MedicationRequest | NutritionOrder | RequestOrchestration | ServiceRequest | SupplyRequest | VisionPrescription)	Procedure that caused this media to be created
status	?! Σ	1..1	code	current | superseded | entered-in-error Binding: DocumentReferenceStatus ( Required)
docStatus	?! Σ	0..1	code	registered | partial | preliminary | final | amended | corrected | appended | cancelled | entered-in-error | deprecated | unknown Binding: Composition Status ( Required)
modality	Σ	0..*	CodeableConcept	Imaging modality used Binding: Modality ( Extensible)
type	Σ	0..1	CodeableConcept	Kind of document (LOINC if possible) Binding: FHIR Document Type Codes ( Preferred)
category	Σ	0..*	CodeableConcept	Categorization of document Binding: Referenced Item Category Value Set ( Example)
subject	Σ	0..1	Reference( Any)	Who/what is the subject of the document
context	Σ C	0..*	Reference( Appointment | Encounter | EpisodeOfCare)	Encounter the document reference is part of
event		0..*	CodeableReference( Any)	Main clinical acts documented Binding: v3 Code System ActCode ( Example)
related		0..*	Reference( Any)	Related identifiers or resources associated with the document reference
bodySite	Σ	0..*	CodeableReference( BodyStructure)	Body part included Binding: SNOMED CT Body Structures ( Example)
facilityType	C	0..1	CodeableConcept	Kind of facility where patient was seen Binding: Facility Type Code Value Set ( Example)
practiceSetting	C	0..1	CodeableConcept	Additional details about where the content was created (e.g. clinical specialty) Binding: Practice Setting Code Value Set ( Example)
period	Σ	0..1	Period	Time of service that is being documented
date	Σ	0..1	dateTime	When this document reference was created
author	Σ	0..*	Reference( Practitioner | PractitionerRole | Organization | Device | Patient | RelatedPerson | CareTeam)	Who and/or what authored the document
attester		0..*	BackboneElement	Attests to accuracy of the document
mode		1..1	CodeableConcept	personal | professional | legal | official Binding: Composition Attestation Mode ( Preferred)
time		0..1	dateTime	When the document was attested
party		0..1	Reference( Patient | RelatedPerson | Practitioner | PractitionerRole | Organization)	Who attested the document
custodian		0..1	Reference( Organization)	Organization which maintains the document
relatesTo	Σ	0..*	BackboneElement	Relationships to other documents
code	Σ	1..1	CodeableConcept	The relationship type with another document Binding: Document Relationship Type ( Extensible)
target	Σ	1..1	Reference( DocumentReference)	Target of the relationship
description	Σ	0..1	markdown	Human-readable description
securityLabel	Σ	0..*	CodeableConcept	Document security-tags Binding: Example set of Security Labels ( Example)
content	Σ	1..*	BackboneElement	Document referenced
attachment	Σ	1..1	Attachment	Where to access the document
profile	Σ	0..*	BackboneElement	Content profile rules for the document
value[x]	Σ	1..1		Code|uri|canonical Binding: HL7 ValueSet of Format Codes for use with Document Sharing ( Preferred)
valueCoding			Coding
valueUri			uri
valueCanonical			canonical()
Documentation for this format