ICD-10 Code H68.123 – Intrinsic cartilagenous obstruction of Eustachian tube, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H68.123 – Intrinsic cartilagenous obstruction of Eustachian tube, bilateral
What it is
This code identifies bilateral blockage within the cartilaginous portion of the Eustachian tubes. It indicates a structural or intrinsic obstruction affecting both sides, which can interfere with normal middle-ear pressure equalization.
Clinical signs
Documentation may note ear fullness, muffled hearing, popping, or pressure changes, often affecting both ears. Clinical features vary; refer to documentation for the specific findings supporting bilateral Eustachian tube obstruction.
When to use this code
Use H68.123 when the provider documents intrinsic cartilaginous obstruction of the Eustachian tube on both sides. It is appropriate when the record clearly distinguishes bilateral obstruction from unilateral disease or other causes of Eustachian tube dysfunction. Check documentation if the note only says “Eustachian tube dysfunction” without location or type.
Do not use for
Do not use this code for nonspecific ear pressure, otitis media, or other middle-ear disorders unless intrinsic bilateral cartilaginous obstruction is documented. Do not assign it when the site or laterality is not stated.
Coding tip
Verify both laterality and the term “intrinsic cartilaginous obstruction” before coding.