It was figured by Mercy. I haven't received any documents from my insurance yet, but what Mercy sent me was their estimate of what would be due after insurance.

It seems like this is more common now. I had my son 7 years ago and never had to prepay for anything. Always just waited for the bill after it was settled through insurance.

Had an ultrasound a few weeks back and they required full payment of the estimated amount due when I checked in.

This has stuck in my 6-year-old's head to the point where he will randomly sing it out and I regularly hear him sing it in the shower. Can't stand it.