ICD-10 Code H68.13 – Extrinsic cartilagenous obstruction of Eustachian tube (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H68.13 – Extrinsic cartilagenous obstruction of Eustachian tube
What it is
This code identifies blockage of the cartilaginous part of the Eustachian tube caused by something outside the tube. It is used when the obstruction is extrinsic rather than from disease within the tube itself.
Clinical signs
Clinical features vary; refer to documentation. Commonly documented findings include Eustachian tube dysfunction, ear fullness, muffled hearing, or pressure-related symptoms when the tube cannot open normally.
When to use this code
Use H68.13 when the record clearly states extrinsic obstruction of the cartilaginous Eustachian tube. This may apply when a mass, swelling, or nearby structure is documented as causing the blockage. Check documentation for laterality or associated ear conditions if reported.
Do not use for
Do not use this code for nonspecific Eustachian tube dysfunction without documented extrinsic obstruction. Do not assign it when the problem is due to intrinsic tube disease or when documentation is unclear.
Coding tip
Look for the word “extrinsic” and the documented cause before assigning this code.