Good question and nobody can predict what insurance companies will do or when, but my guess is you'll see them start covering it in the coming year as 5-year data becomes available. It won't be all of them at once, of course, and no doubt there will be holdouts, but I think it's on the horizon.
How insane is it that American health care is dictated by for-profit companies that have a vested interest in denying everything they can?