Name	Flags	Card.	Type	Description & Constraints
CommunicationRequest	TU		DomainResource	A request for information to be sent to a receiver Elements defined in Ancestors: id, meta, implicitRules, language, text, contained, extension, modifierExtension
identifier	Σ	0..*	Identifier	Unique identifier
basedOn	Σ	0..*	Reference( Any)	Fulfills plan or proposal
replaces	Σ	0..*	Reference( CommunicationRequest)	Request(s) replaced by this request
groupIdentifier	Σ	0..1	Identifier	Composite request this is part of
status	?! Σ	1..1	code	draft | active | on-hold | revoked | completed | entered-in-error | unknown RequestStatus ( Required)
statusReason		0..1	CodeableConcept	Reason for current status CommunicationRequestStatusReason ( Example)
category		0..*	CodeableConcept	Message category CommunicationCategory ( Example)
priority	Σ	0..1	code	routine | urgent | asap | stat RequestPriority ( Required)
doNotPerform	?! Σ	0..1	boolean	True if request is prohibiting action
medium		0..*	CodeableConcept	A channel of communication ParticipationMode ( Example)
subject		0..1	Reference( Patient | Group)	Focus of message
about		0..*	Reference( Any)	Resources that pertain to this communication request
encounter	Σ	0..1	Reference( Encounter)	Encounter created as part of
payload		0..*	BackboneElement	Message payload
content[x]		1..1		Message part content
contentString			string
contentAttachment			Attachment
contentReference			Reference( Any)
occurrence[x]	Σ	0..1		When scheduled
occurrenceDateTime			dateTime
occurrencePeriod			Period
authoredOn	Σ	0..1	dateTime	When request transitioned to being actionable
requester	Σ	0..1	Reference( Practitioner | PractitionerRole | Organization | Patient | RelatedPerson | Device)	Who/what is requesting service
recipient		0..*	Reference( Device | Organization | Patient | Practitioner | PractitionerRole | RelatedPerson | Group | CareTeam | HealthcareService)	Message recipient
sender	Σ	0..1	Reference( Device | Organization | Patient | Practitioner | PractitionerRole | RelatedPerson | HealthcareService)	Message sender
reasonCode	Σ	0..*	CodeableConcept	Why is communication needed? v3 Code System ActReason ( Example)
reasonReference	Σ	0..*	Reference( Condition | Observation | DiagnosticReport | DocumentReference)	Why is communication needed?
note		0..*	Annotation	Comments made about communication request
Documentation for this format