When my wife signed us up for health care through the state she was off by one day on my birthday. For the last year my life has been an absolute nightmare of people saying they fixed it but (surprise!) they didn't, getting insurance reimbursements & referrals bounced bc of the wrong date, having to spend hours on the phone trying to get it corrected so I'm not billed full amt at every single provider (surprise! It's never fixed!)
US health care makes Kafka's bureaucracies look simple & easy
They don't do this sort of thing deliberately, but they absolutely profit off it - they not only have no incentive to fix faults in their computer systems that result in things like it being hard-to-impossible to fix birth dates (somewhere an insurance company software project manager is saying "Why would we ever need the DoB field to be editable? People's birthdays don't change. Go ahead and make it part of a multifield foreign key.") they actually have a financial incentive to leave such errors in.
Oh the stories I could tell you. Insurance company IT is utterly awful, because every bug is a profit center.
Abandoned America
Siderea, Sibylla Bostoniensis