Need to bill and code colonoscopy w/ bx,started in one office, finished in another because of power outage.. Procedure was started in the first office..Do I bill proc 2 x, once w modifier 53? and once w modifier 76? Anesthesia was given in both locations,by a separate anesthesiologist..Do i bill that 2 x as well? or just forget about the first attempt and bill for the second one only? Thanks for any help you can offer.