Overnight stay in hospital after accident

I was out with a friend in Kyushu, he got a little
too inebriated and fell down a flight a stairs, putting a huge gash in
his head. He was unconscious for a minute or so but he woke up and we
eventually got him to a hospital. We brought him in, showed the front
desk his Japanese health card that was in his wallet. Soon after, two
nurses came out right away and took him to the back and got him
stitched, (about ten stitches) cleaned up and gave him a place to rest
for the night on the hospital bed. He told me he got a bill a bit
later for a little over 10,000 yen, or a little over a hundred
dollars.

I wonder how much this would have cost back in the states?

Gavin
Japan
Hawaii