I am not sure how I would bill a 45330 performed by one physician and 46040 performed by a colorectal surgeon ( who happened to be in the facility performing other procedures. ) In doing so it saved the patient from coming back to have this done another day after discovering the pt had a peri rectal abscess. I am billing the facility fee electronic to Medicare. I could list both procedures on the claim but how would I note who performed what? We list who the practicing/referring physician was for the procedure being billed by the facility but we can only list one.