I am in Colorado. We are having problems getting paid by Worker's Compensation, Medicare, and various private insurance carriers for the Fluoro guidance, 77002, when billing for MR arthrograms. I am coding the injection, ie 23550, 77002 and 73222. There are no CCI edits, and my research has confirmed this is correct coding. Is anybody else having problems? How are you coding? What am I missing? Your input is greatly appreciated.