HCPCS 31256

Nasal/sinus endoscopy, surgical, with maxillary antrostomy

AI EXPLANATION: Functional endoscopic sinus surgery (FESS) with maxillary antrostomy is an outpatient procedure used to treat chronic sinus inflammation and blockages. A doctor inserts a thin, lighted tube with a camera into the nasal passages to see the sinus tissues directly. Small instruments are then used to open and enlarge the natural drainage pathway of the maxillary sinus, which is the sinus cavity located behind the cheek, allowing mucus to drain properly and improving airflow.