This mainly depends on how the hospital operates. In regular hospitals, this kind of advance payment can be pre-authorized, and then the pre-authorization can be confirmed at the final checkout. Then divide the original frozen funds into two parts, one belongs to the hospital and the other is released. However, there are also cases where hospitals do not pre-authorize, but spend. In this case, the hospital can refund the cash or refund the overcharged money to the original card by transferring POS.