Insurance
I don't have any idea... but the first thing that came to mind is that if you haven't posted this on the main board, you may want to consider doing that if you don't get any help from the TN board.
Two other ideas might be: go to Other Tennessee Resources and click on "Find a Bariatric Surgeon". I don't know, but they may have search perimeters that will help. The only other thing I can think of is to contact your insurance people and ask them - or look on their website.
Good luck!
~ Tara