ICD-10 Code H74.8X1 – Other specified disorders of right middle ear and mastoid (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H74.8X1 – Other specified disorders of right middle ear and mastoid
What it is
This code identifies a documented disorder affecting the right middle ear or mastoid that does not fit a more specific ICD-10-CM category. Use it when the clinician names a right-sided condition but the record lacks a better code.
Clinical signs
Clinical features vary; refer to documentation. Findings may include ear pain, hearing change, fullness, drainage, or mastoid tenderness, depending on the underlying disorder.
When to use this code
Use H74.8X1 when the provider documents an “other specified” right middle ear or mastoid disorder and no more specific code is available. It is appropriate for finalized diagnoses, not for symptoms alone. Check documentation for laterality and exact wording before assigning the code.
Do not use for
Do not use this code for unspecified ear disease, left-sided conditions, or disorders with a more specific ICD-10-CM diagnosis. If the chart only lists symptoms such as ear pain or hearing loss, code the symptom instead.
Coding tip
Verify that the note clearly supports the right side and the “other specified” wording before coding H74.8X1.