Modifier 27 in facility coding

Modifier 27 is for hospital/outpatient facilities to use when multiple outpatient hospital Evaluation and Management (E/M) encounters occur for the same member on the same date of service. Modifier 27 is exclusive to hospital outpatient departments, including hospital emergency departments, clinics and critical care.

Append modifier 27 to a separate, subsequent and distinct E/M service if the patient receives more than one E/M service in the same hospital, on the same day, with different providers.