ICD-10 Code H74 – Other disorders of middle ear mastoid (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H74 – Other disorders of middle ear mastoid
What it is
H74 covers other specified disorders of the middle ear and mastoid that do not fit a more specific ICD-10-CM code. Use it when the documentation identifies a middle ear or mastoid condition, but the exact named diagnosis is not listed elsewhere.
Clinical signs
Clinical features vary; refer to documentation. Patients may have ear pain, hearing changes, fullness, drainage, or abnormal otoscopic findings involving the middle ear or mastoid.
When to use this code
Use H74 when the clinician documents a middle ear or mastoid disorder and no more specific code applies. It is appropriate for charted diagnoses such as an unspecified other disorder of these structures, provided the record supports the site and nature of the condition. Check documentation if the note is vague.
Do not use for
Do not use H74 when the diagnosis is a clearly named condition with its own code, such as otitis media or mastoiditis. Also avoid it when the record only describes nonspecific ear symptoms without a documented disorder.
Coding tip
Code the most specific documented middle ear or mastoid disorder first; use H74 only when no more precise option is supported.