Earlier quoted context omitted.
They'd most likely go bankrupt. There is already an incentive for them to spend on medical care due to the Medical Loss Ratio (MLR) which caps their profits on collected premiums. If you're saying they need to be forced to pay whatever invoice comes to them and start legal battles for each suspect case then yeah... that doesn't seem feasible.
Health insurance companies are not immediately insolvent because they 1. pay out claims slowly and/or 2. deny or downcode claims outright? Really? That to me would imply that doctors/patients are submitting a huge amount of incorrect claims.
> That to me would imply that doctors/patients are submitting a huge amount of incorrect claims
UnitedHealthcare says that 10% of claims go through additional review for various reasons[0].
I don't know if there are stats for the industry as a whole, but my guess is that they deal with a lot of errors.
0: https://www.uhc.com/news-articles/newsroom/how-many-claims-a...