irritated yet again.
Your surgeon should have known and already handled that! If it is urgent they should be able to get a phone approval or if an emergency they can take the chance it is going to be covered. Most insurance won't cover it unless it is for a very good reason. Some are awesome and just automatically say fine and others you have to fight tooth and nail to just get the band removed and no revision. So you could be in for quite a ride, it's rarely easy.