This Change Healthcare "hack" has been tremendously disruptive, and I am surprised we are not hearing more about it. Several medical centers I know in this area are running out of money due to not being paid. Systems have been down for 2 weeks now.
https://www.nytimes.com/2024/03/05/health/cyberattack-healthcare-cash.html
https://www.unitedhealthgroup.com/changehealthcarecyberresponse