Each was billed at POS 22, each as one unit of service, each were billed with the same from and thru date (02/01/2019) and Medicare paid everything but the 77427. I have narrowed down that the conflict is between 77770 and 77427. Medicare denies stating an incomplete or missing modifier but -59 is not acceptable for 77427. I have read that -26 is not allowed for 77427. What do I need to do to get this claim paid? Can it be paid? HELP