It probably depends on your insurance company.. I had to do all the testing first. First I attended a seminar to learn about the lap band, then I completed a psych eval, then submitted a letter from my GP, along with 2 years of weight records, I would submit your sleep study, but its possible your insurance would require an update. There is an insurance forum, you might be able to find someone with your same insurance company that could help you more. GOOD LUCK.. Just stick with it-- they will approve you