Hey Lauren. I have been on a Minimed since last November and BCBS covered (most) it with no problem. I still have to pay quite a bit for supplies though. I have also been on a CGM since Febraury. My request was denied the first time, but then my endo wrote a specific "letter of medical necessity." They have a general form letter, but BCBS wanted a specific one for me before they would consider covering it. My local Medtronic rep said that I was the first BCBS of KC sensor candidate to be approved.
I absolutely love my CGM. I really don't know what I would do without it now. It does give delayed readings sometimes, and once in a while it is no where close to being right, but most of the time it has been pretty close. Since starting the CGM, I feel that I have better control because I always know about where I'm at. If my CGM says that I am too high, but I normally wouldn't do a finger stick for another couple hours, I can catch it sooner and bolus to bring it back down. I'm expecting my next a1c to be much better and I will attribute it to my CGM. It has also saved me from what could have been some severe overnight lows.
Hope this helps.