Our office is currently trying to figure out what to do about coding G0439, 99397, and a 99213 to Medicare advantage plans. I was not aware that the advantage plans started accepting the 99397. My supervisor and I assumed that since Medicare will not pay for 99397 that the advantage plans would not either.
A rep came into the office and let the doctors know that they could and provided us with documentation on this(for the two codes). So if they bill a G0439 and a 99397 should I put a 25 modifier on the 99397?

Also the Doctors are billing all three codes, G0439, 99397, and 99213. Is this allowed? We have done tons of research and have no documentation just reps telling us yes we can. When we ask for documentation stating that we can do this they say "we don’t have any".

Please Help we are not getting a straight answer from anyone.