ICD-10 Code H74.393 – Other Acquired Abnormalities of Ear Ossicles, Bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H74.393 – Other acquired abnormalities of ear ossicles, bilateral
What it is
This code identifies acquired structural problems affecting the tiny middle-ear bones in both ears. Use it when documentation shows a bilateral ossicular abnormality that is not better described by a more specific diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include conductive hearing loss, abnormal middle-ear examination, or imaging/operative evidence of ossicular change affecting both sides.
When to use this code
Use H74.393 when the provider documents an acquired abnormality of the ear ossicles in both ears and does not name a more specific condition. It may apply after trauma, chronic ear disease, or prior surgery if the record supports bilateral involvement. Check documentation when laterality or cause is unclear.
Do not use for
Do not use this code for congenital ossicular anomalies or for unilateral disease. If the chart identifies a more specific middle-ear disorder, code that diagnosis instead.
Coding tip
Confirm both the acquired nature and bilateral laterality in the record before assigning H74.393.