Name	Flags	Card.	Type	Description & Constraints
DeviceAssociation	Σ D		DomainResource	A record of association or dissociation of a device with a patient Elements defined in Ancestors: id, meta, implicitRules, language, text, contained, extension, modifierExtension
identifier	Σ	0..*	Identifier	Instance identifier
device	Σ	1..1	Reference( Device)	Reference to the devices associated with the patient or group
category	Σ	0..*	CodeableConcept	Describes the relationship between the device and subject
status	Σ	1..1	CodeableConcept	implanted | explanted | attached | entered-in-error | unknown Binding: DeviceAssociation Status Codes ( Required)
statusReason	Σ	0..*	CodeableConcept	The reasons given for the current association status Binding: DeviceAssociation Status Reason Codes ( Required)
subject	Σ	0..1	Reference( Patient | Group | Practitioner | RelatedPerson | Device)	The individual, group of individuals or device that the device is on or associated with
bodyStructure	Σ	0..1	Reference( BodyStructure)	Current anatomical location of the device in/on subject
period	Σ	0..1	Period	Begin and end dates and times for the device association
operation	Σ	0..*	BackboneElement	The details about the device when it is in use to describe its operation
status	Σ	1..1	CodeableConcept	Device operational condition Binding: FHIR Device Association Operation Status ( Example)
operator	Σ	0..*	Reference( Patient | Practitioner | RelatedPerson)	The individual performing the action enabled by the device
period	Σ	0..1	Period	Begin and end dates and times for the device's operation
Documentation for this format