Intrinsic cartilagenous obst of eustach tube, bilateral

This code signifies a congenital or acquired narrowing or blockage of both Eustachian tubes due to an abnormality within the cartilage itself, rather than external compression or inflammation. This intrinsic obstruction impairs the normal ventilation and drainage of the middle ear, leading to symptoms such as hearing loss, ear fullness, and recurrent otitis media.

Use this code when documentation explicitly states bilateral intrinsic cartilaginous obstruction of the Eustachian tube. This diagnosis is typically made after otoscopic examination, tympanometry, and potentially imaging studies, ruling out other causes of Eustachian tube dysfunction. It is often seen in cases of persistent Eustachian tube dysfunction unresponsive to conventional treatments.

• Ensure documentation specifies "intrinsic cartilaginous" and "bilateral" to support this specific code.
• Distinguish from other Eustachian tube disorders like patulous Eustachian tube (H69.0-) or other specified Eustachian tube disorders (H69.8-).
• Code any associated conditions, such as otitis media, separately.