Surprise medical bills and what patients need to know to avoid them

In “Bill of the Month,” a continuing partnership between “CBS This Morning” and Kaiser Health News and NPR, Gayle King investigates a complaint from a woman who claims she received a surprise out-of-network bill for a knee surgery performed by an in-network doctor. Kaiser Health News Editor-in-Chief Dr. Elisabeth Rosenthal discusses why people receive these surprise bills and what patients need to know to avoid them.