Bilateral endoscopic antral ethmoidectomy with bilateral endoscopic maxillary antrostomy. Right endoscopic resection of concha bullosa. Using a sinuscope and microdebrider, the right concha bullosa was resected. The hypertrophic mucosa and anterior ethmoid cells were removed with microdebrider. Attention was then focused on the maxillary sinus ostia, and these were widened. Attention was then focused on the left side, and identical procedures performed on the left anterior sinus and maxillary ostia. Responses 31240, 31256-51, 31256-50 31240, 31256-51, 31256-50 31256, 31256-50 31256, 31256-50 31256-50, 31254-50-51, 31240-51-RT 31256-50, 31254-50-51, 31240-51-RT 31240