BC/BS of Oklahoma

Has anyone got this insurance? When the girls in the office first called to see if this type of insurance covers the surgery, they told me that it would at 100%. I have finished my blood work, ekg, chest x-ray and the 3 nutrition classes. They will send off to insurance for approval and I was told it could be 30 - 60 days. I have diabetes, high blood pressure with a BMI of 44.