This U.S. industry comprises establishments with physicians and other medical staff primarily engaged in (1) providing surgical services (e.g., orthoscopic and cataract surgery) on an outpatient basis or (2) providing emergency care services (e.g., setting broken bones, treating lacerations, or tending to patients suffering injuries as a result of accidents, trauma, or medical conditions necessitating immediate medical care) on an outpatient basis. Outpatient surgical establishments have specialized facilities, such as operating and recovery rooms, and specialized equipment, such as anesthetic or X-ray equipment. Illustrative Examples: Freestanding ambulatory surgical centers and clinics Freestanding emergency medical centers and clinics Freestanding trauma centers (except hospitals) Urgent medical care centers and clinics (except hospitals) Cross-References.