
Ransomware, tsch! The bad guys would probably find it much more profitable if they managed to mess with the billing systems in US healthcare institutions, to try to insert a few spurious charges of a couple of thousand dollars per procedure here and there.
I imagine they could continue doing this for years without detection... if I have understood correctly, standardised "billing errors" are considered a feature not a bug, so the institutions would be likely to aggressively ignore any complaints.