Lisa--
DON'T GIVE UP! I also have BCBS-(IL)and was denied about a yr. ago. I had provided a lengthy diet history; however, they had just started requiring a 6-mo. med.-supervised diet. So I played that game (making no true effort to lose the weight, w/ the full knowledge of my PCP). Then when that was all done, I was again denied because they had AGAIN changed their policy and now wanted 12 mo. of med.-superv. diet! This was in spite of the fact that their phone records showed I had been told 6 mo. I wrote an appeal letter and received approval 10 days later! I almost fell over! I really think most insurances are reacting similarly to the increased # of bypass requests--requiring the 6 or 12 mo. med.-supervised diets--and hoping that most people just won't follow thru & do it--or if they're denied, they won't do anything about it. I would say to do EXACTLY what they say and DOCUMENT EXACTLY when & whom you talk to. Best of luck; I know it's disappointing to come up against a set-back like this, but now a yr. after my initial attempt to gain approval, I have a surgery date in less than 3 wks.