Yes, I was denied once then lost the appeal. I even had 2 comorbities and submitted letters from all of my specialists including a psych evaluation. I was told that I wasn't "sick enough", I needed a hospitalization for one of the comorbities for them to even reconsider my appeal.
I'm on my way home now from getting my sleeve with Dr. Illan and will be switching my insurance to Aetna next month.