This event caused 20,000 consults and emergency ops to be cancelled

Health IT failures cost dollars, frequently of the six-digit variety. But what about damage to actual health?
Some 20,000 appointments, including emergency operations, were reportedly cancelled when the WannaCry cyberattack hit the UK National Health Service (NHS) in 2017.
To understand the consequences of a more typical glitch, researchers examined 18 million reports in the NHS’ patient safety database.
They found 2557 computer-related safety threats for review. Some 82% of those led to “no harm”.