Call your insurance and ask them to mail you a guideline for weight lost surgery. Also ask them for surgeons in your area that perform weight lost surgery. VSG is a new surgery in the USA and most doctors don't want to perform this surgery because there is no long term data on it. I have BCBS and they sent me a email, but I have BCBS PPO and I performed most of my pre testing through my husband's job-due to a no copayment and I will be admitted to that hospital for my surgery. I work at a doctor's office and deal with referrals and specialty request all day.
1. Call BCBS for weight lost surgeons and surgery guidelines
2. Call the surgeon ask if they perform VSG and accept your surgery
3. Call your PCP (primary care physician) and tell them you need a referral for the surgeon you chose.
If you have any further questions feel free to message me. It will all go smooth just demand what you want and do your research so they can't steer you in the wrong direction.
Good Luck Honey!