DEFINITIONS. Initial hospital care – E&M codes (99221, 99222, 99223) used to report the first hospital inpatient encounter between the patient and admitting physician. Subsequent inpatient care – E&M codes (99231, 99232, 99233) used to report subsequent hospital visits. Hospital Discharge Day Management Services – E&M codes (99238, 99239) used to report the work performed to discharge a patient from an inpatient stay..