Antonio_diaz | Istock | Getty ImagesThe largest bills are mostly owed to hospitalsThe Urban Institute study found that 73% of adults with medical debt owe hospitals at least some of it. Almost two-thirds, or 63%, of adults with past-due medical debt incurred it when they had insurance, the research found. An estimated 100 million adults have medical debtOverall, an estimated 41% of people — or about 100 million adults — face medical debt, ranging from under $500 to $10,000 or more, according to a report from the Kaiser Family Foundation. watch nowNo Surprises Act is reducing unexpected billsOne of the biggest causes of unexpected large medical bills historically was out-of-network providers being involved in your care — often at a hospital — without you realizing it. Some medical debt is dropping off credit reports

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