Does anyone have any experience billing the code 99000?? Doctor has expressed interest in using it. I've read up on it and understand what to use it for. However I'm reading that most insurances don't allow/pay for it and I'm not sure if this is something we'd end up having to write off as part of the contractural write off or if we can bill to the patient once the insurance deny. Anyone have any experience with this? Thanks in advance!