'No-Pay' Policy for HAIs Does Not Reduce Infections
Researchers find no reduction in the rate of certain hospital-acquired infections after the start of a federal policy prohibiting reimbursement for acute care services necessitated by those infections.

I'll say it before and I'll say it again, it was a good idea to start out with, but unfortunately you can motivate people by a penalty system on things that can't be helped either way. Chasing zero is a respectable goal in hospital infections, but with the current technology it just isn't realistic.