Reminds me of my kid's $6000 bump on the head. Or the time I had and knee operation and they took five minutes extra to clean out something they spotted and added $3500 to the bill. Or the eye operation where they took fifteen minutes extra because there was a detached retina adding $9000 to the bill. (Insurance wouldn't pay that one. They never said why either.)
You are not exactly going to negotiate at moments like these.