I'm currently covered under my mother's insurance and she has Aetna (it's also the insurance the company I work for has available as well). I just wanted to chime in and give a heads up to not be surprised if they won't cover top surgery -- my ma told me that she looked but couldn't find a plan that covered the surgeries, because she planned to switch for me if she could. I don't know if that was just for the plans she could choose from through her work though, because I didn't ask any questions (I haven't expected to find insurance to cover much for a while now). So perhaps they do have a plan or plans, but they're just not available to her.
It's worth checking into at the least.
I've also heard of some doctors managing to work with the insurance you have to get some things covered to an extent. Not positive if that is true with top surgery as well or not. It also has to do with working with the wording of the plan and basically wording things just the right way on the claim that they cover it. No idea how many doctors are willing to do that, however, because while I'm one who enjoys finding loopholes in how things are worded it's also a tricky game to play and I don't know if that might be risking insurance fraud or not.
That said, I agree with Rob that contacting your insurance company should be your first step in figuring out whether there is coverage available or not.