ICD-10 Code H74.391 – Other acquired abnormalities of right ear ossicles (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H74.391 – Other acquired abnormalities of right ear ossicles
What it is
H74.391 identifies an acquired structural abnormality of the right ear ossicles, the small bones that conduct sound in the middle ear. Use it when documentation specifies a noncongenital abnormality affecting the right side.
Clinical signs
Clinical features vary; refer to documentation. Findings may include conductive hearing loss, abnormal middle-ear examination, or imaging and operative evidence of ossicular damage or deformity.
When to use this code
Use this code when the record clearly states an acquired abnormality of the right ossicles, such as post-traumatic, post-inflammatory, or other noncongenital change. It fits when the provider documents the right ear and does not name a more specific diagnosis.
Assign it only when the abnormality is in the ossicles themselves, not for general ear disease or hearing loss alone. If the laterality or acquired nature is unclear, check documentation before coding.
Do not use for
Do not use this code for congenital ossicular anomalies, left or bilateral findings, or unspecified ear involvement. It is also not appropriate for hearing loss without documentation of an acquired ossicular abnormality.
Coding tip
Confirm laterality and that the condition is acquired, then look for a more specific middle-ear diagnosis before defaulting to H74.391.