ICD-10 Code H74.392 – Other acquired abnormalities of left ear ossicles (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H74.392 – Other acquired abnormalities of left ear ossicles
What it is
This code identifies an acquired, noncongenital abnormality affecting the ossicles in the left middle ear. Use it when documentation names a left-sided ossicular change that does not fit a more specific diagnosis.
Clinical signs
Patients may have conductive hearing loss, aural fullness, or abnormal findings on otoscopy or imaging. Clinical features vary; refer to documentation.
When to use this code
Use H74.392 when the provider documents an acquired abnormality of the left ear ossicles and no more specific code applies. This may follow trauma, chronic ear disease, or other structural change, but the record must support the left-sided ossicular involvement. If the note only says “ossicular abnormality,” check documentation for laterality and cause.
Do not use for
Do not use this code for congenital ossicular anomalies or for disorders that have a more specific ICD-10-CM code. Do not assign it when the documentation does not clearly identify the left ear.
Coding tip
Confirm that the abnormality is acquired and left-sided before coding; if the record is vague, check documentation.