HCPCS 31255

Nasal/sinus endoscopy, surgical with ethmoidectomy; total (anterior and posterior)

AI EXPLANATION: A complete endoscopic ethmoid sinus surgery is an outpatient procedure to treat chronic sinus inflammation and remove noncancerous tissue growths called nasal polyps. During the operation, a surgeon inserts an endoscope—a thin tube with a light and miniature camera—through the nostrils without external cuts. Using precision instruments, the surgeon opens the ethmoid sinus cavities located between the eyes and the bridge of the nose, clearing out obstructive polyps and swollen tissue to improve nasal airflow and restore normal sinus drainage.