Sue ~
I can understand your feeling of devastation over Blue Cross/Blue Shield refusing to accept your claim for a BAHA. I also agree with you that this practice appears to be illegal at some level and definitely discriminatory. I think you're on the right track by appealing to your state insurance commissioner, which can often produce the desired result. I'm not certain what AARP will do but it's worth talking to their representative to see if they can help. Writing letters to your governor and congressman about this discrimination may be a futile exercise but I would recommend doing it because 'you never know'. Contacting a local newspaper and/or TV station to see if you can generate any interest from them in covering this issue might be worthwhile. All they can do is ignore you, which is a distinct possibility. However, in my experience, should the local media be interested, the resulting negative publicity could work wonders with a health insurance conglomerate that is trying to avoid paying on valid claims from policyholders, like you.
Meanwhile, try not to lose your self confidence. I'm sure you're a fine teacher and I hope and will pray that you're successful in the battle to get Blue Cross/Blue Shield to cover your BAHA cost.
Jim