Indeed, and insurance is already highly regulated. It doesn't seem like it would be very hard to basically say, "you can't consider assisted suicide as an alternative option when making coverage decisions."

Will it still happen somewhat? Yeah probably, but there's also the very real suffering of a human being that needs to be considered. Telling them, "no sorry you have to have a painful and prolonged and undignified death because an insurance company might misuse the option if we give it to you" is pretty messed up IMHO