In ERs in the US they are not allowed to ask for payment prior to you being seen by the doc. They can ask for registration info and all but the law changed on the payment. So anyone can show up at any ER and be treated without paying first.
In a labor and delivery setting, if you show up, we treat you. We don't ask for payment for that either. The hospital sends a bill afterwards. Although at a lot of hospitals if you don't have insurance or medicaide already set up when you check in, you will not get an epidural without up front payment of cash to the anesthesiologist. It is considered an elective procedure.
My son made this for me: