ICD-10 Code H80 – Otosclerosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H80 – Otosclerosis
What it is
Otosclerosis is abnormal bone remodeling in the middle ear that can fix the stapes and reduce sound transmission. It is a common cause of progressive conductive hearing loss.
Clinical signs
Patients often present with gradually worsening hearing loss, usually without pain or infection. Tinnitus may occur, and exam findings may include a normal tympanic membrane and conductive hearing loss on audiology.
When to use this code
Use H80 when the provider documents otosclerosis as the confirmed diagnosis, including stapes fixation or otospongiosis. Code it for unilateral or bilateral disease when the record supports the condition. Check documentation if the note only describes hearing loss without a specific cause.
Do not use for
Do not use this code for nonspecific hearing loss, otitis media, or other middle ear disorders without documented otosclerosis. If the chart does not clearly identify the condition, check documentation.
Coding tip
Assign H80 only when the clinician names otosclerosis or a clearly equivalent term such as stapes fixation.