Intrinsic cartilagenous obst of eustach tube, unsp ear

This code signifies an obstruction within the Eustachian tube caused by an inherent structural abnormality of the cartilage, rather than inflammation, infection, or external compression. This intrinsic cartilaginous issue impedes the normal ventilation and drainage of the middle ear. The specific ear affected is not documented.

Use this code when documentation clearly indicates a diagnosis of Eustachian tube dysfunction attributed to an intrinsic cartilaginous anomaly. This diagnosis is typically made after otoscopic examination and possibly tympanometry, ruling out other causes of obstruction. Supporting documentation should specify the cartilaginous nature of the obstruction.

• Ensure the documentation explicitly states "cartilaginous obstruction" to differentiate from other types of Eustachian tube dysfunction.
• If the laterality (right or left ear) is specified, use the more precise H68.121 or H68.122 codes.
• Do not confuse with codes for inflammatory or infectious Eustachian tube disorders (e.g., H68.0xx series).