After-hour services are reported by the codes 99051-99053. When reporting after-hours codes, you should first report the appropriate E/M service code for the visit based on the service level the physician provides. Then, report 99050-99053 to indicate that the visit occurred outside of your physicians regular office hours. The code definitions for the after-hours codes are as follows:
99050 — Services provided in the office at times other than regularly scheduled office hours, or days when [...]
