I had major emergency surgery a couple years ago. The hospital sent me a bill for $9k (out of $135k total) after a few months but the status on my insurance web

I had major emergency surgery a couple years ago. The hospital sent me a bill for $9k (out of $135k total) after a few months but the status on my insurance website indicated they were still figuring it out. I called and asked how they had arrived at the numbers in the bill and the person on the phone basically told me "it looks like someone just guessed, go ahead and ignore the bill and we'll send you a correct one later." (Resolution: Thankfully I had excellent health insurance at the time. I think I paid a few hundred bucks to the surgeon and that along with prior expenses filled up my yearly out-of-pocket maximum. I never saw another bill from the hospital)