When you have a colonoscopy procedure or other medical procedure, you are charged a fee for use of the medical facility. This includes costs such as:The nurses and technicians who care for you during your stay.The surgical equipment and the drugs and supplies used during your procedure. Facility fees for the exact same procedure can be substantially different based on where your procedure is performed. If you choose a hospital-affiliated facility, you pay more. If you choose an independent ASC, you pay less