Does Insurance Cover Testing?

I am an out-of-network provider so I don’t accept insurance.  However, I do provide you with an invoice that shows procedure codes and a diagnosis (if there is one).   Most of the time the insurance companies say testing is educational and not medical so they don’t cover it.  Some parents don’t want to use insurance even if they have it because they are concerned about a permanent record.  Additionally, I find their services too restrictive and not compatible with most people’s real needs.  Lastly, the amount of paperwork is excessive.