tci Part B Insider - 2003 Issue 23

Understanding -G8, -G9 Modifiers

 Although it's unusual to use the -G8 modifier with MAC, you might need it for some services: "Some bone biopsies, some neurosurgery cases - including surgery for Parkinson's - and even some amputations may be done under MAC," Barbara Johnson says. You'd use the -G9 modifier with a Column B code to indicate the patient has, or has had in the past, a severe cardiopulmonary condition, Cigna explains. Or, you can use it to show that there's a significant risk of exacerbation to a stable patient during the procedure. "The theory behind it is that MAC...

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