Well, if it works anything like IHS[1], then the system would run out of money before the end of the fiscal year and then you end up paying for it anyway or not getting the treatment. I find people who say "but it will be different for us" to need some proof from the US and not other countries.

1) Indian Health Service - the US agency tasked with providing and paying for Native American health care on reservations or "health service areas". http://www.richheape.com/american-indian-healthcare.htm