the same exact thing happened to me with the same insurance... the only documentation i had was when i was 2,12, and 17 ( mind now that i am 22) but they denied me twice. My Dr said they worked with some law advacates stationed out of California. They had a site too called Obesitylaw.com, my dr sent my case to them and 1 month later i was approved. You could check to see if your dr offers anything like that or check the site and file your own case . It didnt cost me anything. Hope this helps