Nearly 20 percent of U.S. consumers with credit records — 42.9 million people — have unpaid medical debts, according to a new report by the Consumer Financial Protection Bureau. The findings suggest that many Americans are being trapped by debt because they are confused by the notices they get from hospitals and insurance companies about the cost of treatment. As a result, millions of Americans may be surprised to find they are stuck with lower credit scores, making it harder for them to borrow to buy a home or an automobile. "When people fall ill and end up at the hospital with unexpected bills, far too often they have entered into a financial maze," CFPB director Richard Cordray said in a speech to be delivered Thursday in Oklahoma City.