ICD-10 Code H61.309 – Acquired stenosis of external ear canal, unspecified, unspecified ear (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H61.309 – Acquired stenosis of external ear canal, unspecified, unspecified ear
What it is
This code identifies an acquired narrowing of the external ear canal when the affected ear is not specified. It refers to a change developed after birth, rather than a congenital condition.
Clinical signs
Patients may have reduced ear canal opening, blocked sensation, hearing difficulty, or recurrent wax buildup. Clinical features vary; refer to documentation.
When to use this code
Use H61.309 when the record documents acquired stenosis of the external auditory canal but does not identify right or left ear. It also fits when the provider notes canal narrowing from an acquired cause without further laterality detail. Check documentation if the note suggests a congenital or postoperative condition instead.
Do not use for
Do not use this code for congenital ear canal narrowing or for temporary obstruction from cerumen alone. If the chart specifies a different ear or a more specific cause, code that documentation instead.
Coding tip
Verify laterality first; if the note names one ear, use the more specific code.