I've concluded from my experience that insurance companies design their procedures to deny first and ask questions later...it's in their interest to delay as long as possible making payments. It's absurd, of course, but I think you have to talk to insurance repr.s knowing that they are NOT there to help you solve problems...and you've got to keep poking them with different versions of the same question until they're forced to reveal the real problem. The most ridiculous one I had once was a claim was rejected because the billing code had an extra zero on the end of it and had 1 too many digits...a 5 year old would have recognized it as a typo but not the insurance company and all I got back was "not a covered expense.."