86 Days
After I got all the information they needed, I was approved pretty quickly! Don't be afraid to call BCBS and ask them the status after a couple of weeks! They should be able to tell you. They told me over the phone that an approval letter had been sent, so I called my surgeon and told them and we made appointments before the letters were even received. But, every surgeon's office may be different.
I have BCBS AL and I got my answer pretty quick. Initially a denial, then after an appeal, I was quickly approved. Good Luck! and a word to the wise...keep up those monthly appointments until you get your approval, even after your six month. I am glad I did. Those 86 days will be behind you before you know it.