Hi Hannalu,
My abutment was placed June 30, 2010. The insurance had pre-approved. I had also investigated before that and they did say they covered it. I got my processor on June 30th. Shortly after that I started getting insurance EOBs. The insurance paid for the surgeon, the anesthesiologist (for the conscious sedation) and the pre op and post op appointments. However, they denied the hospital bill ($14,000 and some change) saying the hospital never got back to them with the further information they requested. to this date, I have not received a hospital bill. I am thinking that since I made a payment when I went to the hospital to cover the balance of my deductible and my co-insurance, the hospital may not bill me more. However, I'd be shocked if they didn't go after the insurance company. I'm not going to stir the pot, but it seems like it's in a black hole!
No problem with the MRI for me at all. I had an MRI a couple of weeks after my abutment was put in, and there was no pain or discomfort at all.
~Dale
PS You may also want to go to the Cochlear site and see if they can help you with your insurance if it becomes a problem. They do have a department that does that. That is, of course, if your Baha is made by Cochlear. There is also one by Oticon.