In a 1997 law, Congress tied Medicare's payments to physicians to the growth of the economy. Medicare cost increases, including physician expenses, regularly exceed overall economic growth. Under the law, Medicare payments to physicians would have to be cut each year were it not for periodic Congressional action to override the cuts. Without another fix, doctors will see a 27 percent cut in their Medicare payments next year, and an unknown number of them would stop taking Medicare patients. Like much else in Washington, the doc fix has become part of the broader fiscal-cliff debate.