I have two payers that have refused to pay for Covid-19 administration for my OON provider. Even though the admin cpt code is correct and the NDC# is correct. I have to file Appeals for them to reconsider their denials. I can not find exactly where in the law it says Private Health insurance plans are to pay in-network and out-of-network providers. Can anyone point me to where the law exactly says this? Has anyone else had this problem? If so, how did you get the claim paid?