From a Kaiser Health News article:

In 2018 Kaiser Health News and NPR teamed up to create “Bill of the Month,” a crowdsourced investigative series in which we dissect and explain medical bills you send us. We have received nearly 2,000 submissions of outrageous and confusing medical bills from across the country.

https://khn.org/news/your-go-to-guide-to-decode-medical-bills/

Each month we select one bill to thoroughly investigate, often resulting in the bill being resolved soon after the story is published. But what about the large number of Americans who receive surprise medical bills that reporters can’t examine?