For some time now I have tried to find out I keep getting billed for a XXXX panel done XXXX/XXXX/15. XXXX denied the billing as not medically indicated. I have asked that the coding under which it was billed be checked to make sure it was correctly coded and the doctor be contacted to verify that she ordered the test as medically necessary. I have had many conversations about this by phone and email with the billing department and they assured me that it would be looked into and they would know more in XXXX weeks. Today I was surprised to receive in the mail a bill from a collection agency XXXX USCB America XXXX indicating that the account was turned over to them as delinquent. Seems to me that you are not treating me fairly as on one hand your are supposed to be addressing my concerns while on the other you go behind my back and treat the account as delinquent. Please note that I have complete insurance coverage with Medicare and Tricare for Life and usually do not have any medical payments as Tricare for Life pays any charges left after Medicare. I have been told that I signed a form indicating I would pay for the procedure if Medicare did n't, however the form also indicated thatthe estimated cost would be zero [ {$0.00} ] which was the only reason I signed.