Thanks for the correction in the CPT code.
But my main concern is can we bill the Initial obervation care code (99218-99220) if the patient was scheduled for a heart cath that led to the patient having PTCA/stent. The patient needed to be kept in the hospital overnight for observation & then bill a discharge (99217) the next day?
Yes, you can bill for the observation care provided the same day as the procedure.