Will meidcare pay for a revision in California

I have medical and medicare. I need to find out if medicare will pay for a revision from lapband to something else, anything else. I really need to looses the weight. Someone please lead me in the right direction.

I ran into a lady at a new patient seminar who has both medi-cal and medicare and who is trying to have her lapband removed and the bypass done.. She is currently going through the process of getting her insurance approved, so there is hope, but who knows when it comes to the insurance companies. She was pretty sure it would be approved though.