ICD-10 Code H74.329 – Partial loss of ear ossicles, unspecified ear (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H74.329 – Partial loss of ear ossicles, unspecified ear
What it is
This code identifies partial loss or absence of one or more middle-ear ossicles in an unspecified ear. It describes an anatomic defect that can affect sound conduction.
Clinical signs
Clinical features may include conductive hearing loss, abnormal tympanic membrane findings, or a history of ear disease or surgery. Clinical features vary; refer to documentation.
When to use this code
Use H74.329 when the provider documents partial loss of the ear ossicles but does not specify right or left ear. It may apply after imaging, otologic examination, or operative findings confirm ossicular loss. Code only when the documentation supports a partial loss, not a different middle-ear disorder.
Do not use for
Do not use this code for complete absence of ossicles or for hearing loss without documented ossicular loss. Check documentation if the ear side is specified, since a more specific code may apply.
Coding tip
Verify laterality and whether the record says partial versus complete ossicular loss before assigning H74.329.