In simple words: A surgical procedure where a small, flexible tube with a camera is inserted through the nose to view the nasal passages and sinuses. A small balloon is then inserted into the eustachian tube (the tube that connects the middle ear to the back of the throat) and inflated to open it up. This procedure is done on both ears to improve ear function, often when someone has chronic ear problems or hearing loss due to fluid buildup.

Surgical nasal endoscopy involves using a thin, rigid or flexible tube to view the sinuses and nasal passages. This procedure uses endoscopy to insert a balloon-tipped catheter into the eustachian tube and expand it. This code is reported when performed on both sides.After preparing and anesthetizing the nasal passages, the provider inserts an endoscope through the nose. A specially designed, balloon-tipped catheter is inserted into the eustachian tube through the endoscope. The balloon is inflated to dilate the eustachian tube, then deflated and withdrawn through the endoscope. The endoscope is then removed. The procedure is performed on both sides to treat both eustachian tubes.

Example 1: A patient with chronic eustachian tube dysfunction in both ears causing hearing loss and a feeling of fullness undergoes bilateral balloon dilation of the eustachian tubes using nasopharyngoscopy., A child with recurrent ear infections and fluid buildup in the middle ear unresponsive to other treatments undergoes bilateral eustachian tube dilation with nasopharyngoscopy., An adult with persistent ear pressure and popping despite medical management has bilateral balloon dilation of their eustachian tubes via nasopharyngoscopy.

Documentation should include the diagnosis necessitating the procedure, such as chronic eustachian tube dysfunction, the laterality (bilateral in this case), the surgical technique (balloon dilation), the use of nasopharyngoscopy, and any complications encountered.