ICD-10 Code H74.8 – Other specified disorders of middle ear and mastoid (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H74.8 – Other specified disorders of middle ear and mastoid
What it is
This code covers middle ear or mastoid disorders that are documented but do not fit a more specific ICD-10-CM category. Use it when the provider identifies an unusual or otherwise specified condition in this anatomic area.
Clinical signs
Clinical features vary; refer to documentation. Findings may include ear pain, hearing changes, drainage, or abnormal otoscopic or imaging results involving the middle ear or mastoid.
When to use this code
Use H74.8 when the record clearly states a specified middle ear or mastoid disorder and no more precise code is available. It is appropriate for documented conditions such as an atypical structural or inflammatory disorder in this region. Check documentation if the provider’s wording is vague.
Do not use for
Do not use this code when a more specific middle ear or mastoid diagnosis is documented, or when the condition belongs to another ear category. If the chart only says “ear disorder,” check documentation before assigning H74.8.
Coding tip
Code the exact documented term first, and use H74.8 only when no more specific middle ear or mastoid code applies.