I read a few articles about billing EM Codes (99202 - 99205) and Radiation Oncology Clinical Management Codes (77261-77263). And is confusing to me. Can I bill EM Codes (99202 - 99205) and Radiation Oncology Clinical Management Codes (77261-77263) on the same DOS for the same MD? If yes, do I need a modifier? If so, which modifier? Is a new pt, just diagnosed with cancer.