Patulous Eustachian tube, bilateral

This code signifies a condition where both Eustachian tubes remain abnormally open, leading to symptoms like autophony (hearing one's own voice or breathing loudly), aural fullness, and fluctuating hearing. This persistent patency disrupts the normal pressure regulation of the middle ear.

Apply this code when documentation explicitly states bilateral patulous Eustachian tubes. This typically occurs in patients experiencing chronic symptoms related to the tubes remaining open, often exacerbated by exercise, dehydration, or weight loss.

• Ensure documentation specifies "bilateral" involvement; otherwise, use the appropriate unilateral code.
• Distinguish from Eustachian tube dysfunction (H69.8x) where the tube is typically obstructed or not functioning properly, rather than abnormally open.
• Look for physician notes detailing autophony, aural fullness, or other classic symptoms associated with patulous Eustachian tubes.