ICD-10 Code H60.539 – Acute contact otitis externa, unspecified ear (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H60.539 – Acute contact otitis externa, unspecified ear
What it is
This code identifies an acute inflammatory reaction of the external ear canal caused by contact with an irritant or allergen, when the affected ear is not specified. Use it for short-term, contact-related otitis externa.
Clinical signs
Typical findings include ear canal redness, swelling, itching, pain, or discomfort after exposure to a triggering substance. Clinical features vary; refer to documentation.
When to use this code
Use H60.539 when the record documents acute contact otitis externa and the provider does not identify right or left ear. It also fits when the cause is clearly contact-related, but the note lacks laterality. If the documentation only says “otitis externa,” check documentation before assigning this code.
Do not use for
Do not use this code for noncontact otitis externa, chronic ear canal inflammation, or cases with documented right or left ear when a laterality-specific code is available. Check documentation.
Coding tip
Confirm both the contact cause and the unspecified ear before coding, and query for laterality if the chart supports it.