On 8/11/10 we preformed a nasal turbinate resection(30140). We saw the pt back in Sept for a follow up to the procedure. In October the pt came in with a nose bleed unrelated to the turbinate resection. The resection has a 90 global. I billed Medicare for the office visit in Oct and added a modifier 24 to indicate that it was unrelated to the procedure done in Aug. Medicare denied it anyways saying it was part of the post op period. What do you suggest I do? Do I appeal or will I just be hitting my head against the wall? I would have thought that 24 modifier would have been enough. Guess not.Thanks you for your advise.