Following the major revisions to coding evaluation and management (E/M) office visits in 2021,¹ a similar revamp has been made for coding E/M visits in other settings. Effective Jan. 1, 2023, the history and physical examination requirements have been eliminated for coding hospital and nursing home visits.² As with office visits, hospital and nursing home coding is now based solely on medical decision making (MDM) or total time (except for emergency department visits, which must be coded based on MDM, and hospital discharge visits, which must be coded based on time). This further streamlines E/M coding, creating one unified set of rules for office, nursing home, and hospital visits.

Hospital and nursing home E/M visits are divided into three groups: initial services (i.e., admissions), subsequent services, and discharge services. According to the American Medical Association (AMA), initial visits are “when the patient has not received any professional services from the physician or other qualified health care professional or another physician or other qualified health care professional of the exact same specialty and subspecialty who belongs to the same group practice, during the inpatient, observation, or nursing facility admission and stay.”² After the patient has received care from that group once, all other visits are subsequent until the discharge service. When the patient transitions from inpatient to observation, or vice versa, that does not begin a new stay eligible for an initial services visit.

CPT codes 99234-99236 are for patients admitted to the hospital and discharged on the same date. For patients with multi-day stays, use 99221-99223 for initial services, 99231-99233 for subsequent visits, and 99238-99239 for discharge services.

Initial nursing home visits are coded with 99304-99306. CPT is deleting the code for nursing home annual exams (99318), which will instead be coded as subsequent nursing home visits (99307-99310).

Two sets of observation care codes (99217-99220 and 99224-99226) should no longer be used as of Jan. 1. Observation services have instead been merged into the corresponding initial service, subsequent service, and discharge codes.

These changes open the door to a simpler, quicker coding process. Many of the principles that already apply to E/M office visit coding now apply to hospital and nursing home E/M coding, but there are some differences in the details. This short guide can help physicians navigate the changes.