Question: Nevada Subscriber Answer: E/M guidelines indicate that you should use 99239 "to report the total duration of time spent by a physician for final hospital discharge of a patient." Services may include examining the patient, discussing the stay, instructing caregivers on continuous care, and the related paperwork, such as the discharge records, prescriptions, and referral forms, the guidelines state. When you calculate the time involved on discharge day, remember that CPT says the time doesn't need to be continuous. Reminder: You would use 99221 (Initial hospital care, per day, for the evaluation and management of a patient, which requires these 3 key components...) for the initial hospital care work.