We billed a 99291-25, 99292 and 36556 lt we were not paid for the 99292. When we called Medicare they stated that they needed a modifer on the 99292. I have been told to put on 22 on and I'm not sure that is approprite. I would appreciate any and all help.![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)