The date and time at which Activity started. For DRG code, it is the date and time of discharge. For PriorRequest/Authorization, this refers to the date on which the Activity is scheduled/prescribed to be started, or dispensed (for type=Authorization). Note | If the date, but not the time is recorded, the time should be assumed to be 00:00 Restrictions: Needs to be after 01/01/2005, and before the present except PriorRequest/Authorisation transactions.

restriction of DateTimeForm