What they told you about the BCBS PPO approach is true. You have to be on a six month medically supervised diet before the surgery. You might lose weight, not lose weight, gain weight...there is no requirement other than the surgeon's office being able to say that you were on "a six month medically supervised diet". Then BCBS of Illinois will pay for the surgery. I don't want to wait six months and having any of the surgeries (lap band, gastric sleeve plication or gastric bypass) are less than half the cost in the Mexican hospitals. Plus, the Mexican doctors have more experience with the procedures. They have all done more and have been doing them longer. That is why I decided to go to Mexico and to pay for the surgery myself. Clinic in Chicago wanted $13K for the lapband vs. 4995 in Hospital Angeles Tijuana. They don't even offer the gastric plication surgery here yet. So, I am off to Mexico for surgery at the end of the month. I should be 60 pounds thinner before BCBS would even let me do anything.