Over the past year, Americans reportedly borrowed an estimated $88 billion to pay medical bills. “CBS This Morning” has partnered with Kaiser Health News and NPR on their "Bill of the Month" series, which uncovers shocking medical bills. The latest looks at the cost of a life-saving dialysis treatment for 50-year-old Sovereign Valentine. Sovereign and his wife Jessica say their insurance company Allegiance said there were no in-network dialysis clinics in Montana. The company, though, disputes this, based on their records. Sovereign used an out-of-network facility, and received a bill for more than $540,000 for 14 weeks of care.