I am an anesthesia biller and the only way we had been able to get insurance companies to pay for CPT 99140 was add the 59 modifier. Our system has recently updated its clearinghouse and CPT code 99140 is now causing the claims to reject. So, we tried removing the 59 modifier but the claims are still rejecting stating that the parent code for AMA add on CPT/HCPCS code is not specifically identified in the CPT manual, confirm that an appropriate parent code has been coded. What could this rejection reason be referring to?