Encounter.classHistory

The class history permits the tracking of the encounters transitions without needing to go through the resource history. This would be used for a case where an admission starts of as an emergency encounter, then transitions into an inpatient scenario. Doing this and not restarting a new encounter ensures that any lab/diagnostic results can more easily follow the patient and not require re-processing and not get lost or cancelled during a kind of discharge from emergency to inpatient.

= Must Support, = Is Modifier, = QiCore defined extension

Field	Card.	Type	Description
class	1..1	Code	inpatient | outpatient | ambulatory | emergency +. Binding: Classification of the encounter. (extensible)
period	1..1	Interval<DateTime>	The time that the episode was in the specified class.