I had my m/c in October and this week I received $600 in bills that "they" say my insurance won't cover--WTF? That's why we have insurance, so they'll cover stuff. Grrrrr. I'm going to call them and have them resubmit it. It is just another painful reminder, YKWIM?
I used to work for an insurance company, and this has to do with a coding error, where they submit it with WRONG codes. Defintiely call your insurance company, and they should fix it for you. If you have any further questions, you can PM me. I'm so sorry that you have to go through this.
I'm sorry that you are having to deal with this as well. Most definitely take Jess up on that offer to pm and explain it to you. Hopefully she'll have some advice that can help you get it straightened out easily.
Same thing happened to me today. I opened my mail got a bill for over $300 from my insurance company. Part of which is the copay I already paid the day of my D&C. And their charging me for my rh- shot . I just get so angry when this happens because I have to think about it all again and figure out a way to make the call to the insurance company at work, few people know about the m/c and I share an office with 3 other people.