ICD-10 Code H75.8 – Other specified disorders of middle ear and mastoid in diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H75.8 – Other specified disorders of middle ear and mastoid in diseases classified elsewhere
What it is
This code describes a middle ear or mastoid disorder that is caused by another underlying disease, but does not fit a more specific ICD-10 category. Use it when the documentation names a specified ear condition linked to another condition.
Clinical signs
Clinical features vary; refer to documentation. Findings may include ear pain, hearing changes, drainage, or mastoid-related abnormalities, depending on the underlying disease and the exact disorder described.
When to use this code
Use H75.8 when the record clearly states a specified disorder of the middle ear or mastoid secondary to another disease, and no more specific code is available. You should link it to the underlying condition documented by the clinician. If the note is vague, check documentation before coding.
Do not use for
Do not use this code for primary ear disorders without an underlying disease, or when a more specific middle ear or mastoid code applies. Do not guess the causal condition if it is not documented.
Coding tip
Verify both the secondary ear condition and the associated underlying disease before assigning H75.8.