In our office we use modifier GC when a Resident has seen a patient and the Physician has signed off on the In-Patient visit. I hope that this makes sense. My question is: Which book lists the GC modifier and the description? I can't find it in my CPT book. I'd truly appreciate any help. Thanks! ![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)