ICD-10 Code H75.82 – Other specified disorders of left middle ear and mastoid in diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H75.82 – Other specified disorders of left middle ear and mastoid in diseases classified elsewhere
What it is
This code identifies a left-sided middle ear or mastoid disorder that is linked to another underlying disease and does not fit a more specific ICD-10 category. Use it when the documentation clearly ties the ear condition to a separate cause.
Clinical signs
Clinical features vary; refer to documentation. Findings may include ear pain, hearing changes, fullness, drainage, or mastoid tenderness when the record describes a left middle ear or mastoid process involvement.
When to use this code
Use this code when the provider documents a specified left middle ear or mastoid disorder secondary to another disease, but no more specific code is available. It is appropriate only when the note supports both the left-sided site and the “in diseases classified elsewhere” relationship. Check documentation if the underlying disease is not named.
Do not use for
Do not use this code for uncomplicated otitis media, mastoiditis, or bilateral disease unless the record specifically supports H75.82. If the condition is not documented as secondary to another disease, choose a different code.
Coding tip
Verify the causal condition and the left-sided location in the chart before assigning H75.82.