Earlier quoted context omitted.
> A hospital can charge you for anything and you're legally obligated to pay it. Categorically, unequivocally wrong. Hospitals cannot just make up charges. They cannot bill you for procedures/tests/services you did not receive (and if they do, you are not "legally obligated to pay it"). I know the anti-US healthcare circle jerk is pretty strong here, but we don't need to just make things up in order to prove a point.
It's true that they can't just make up services, but they can do a pretty wide range of things and bill you for them, without giving you the price in advance. My dad was in the hospital once, and got something like 20 separate bills, for different services he had no idea he had received (and had no way to verify if he had even received). And my mom actually did get a half-dozen or so bills for services she definitely…
Unless they're a small operation, I don't know that they'd have any direct visibility into the billing/insurance/finance side of the operation. Maybe that is the issue? I don't know how to combat that in a large hospital setting.
The one time I had surgery I ended up getting 3 separate bills for varying amounts, but any time I asked for documentation about a given procedure or test it was provided in writing well before the due date of the bill.