ICD-10 Code H80.93 – Unspecified Otosclerosis, Bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H80.93 – Unspecified otosclerosis, bilateral
What it is
H80.93 identifies otosclerosis affecting both ears when the record does not specify the exact type. It refers to abnormal bone remodeling in the middle ear that can limit sound transmission.
Clinical signs
Common findings include progressive hearing loss, often conductive, and sometimes tinnitus. Clinical features vary; refer to documentation, especially when audiology or otologic exam notes bilateral involvement.
When to use this code
Use H80.93 when the clinician documents bilateral otosclerosis but does not specify fenestral, cochlear, or other subtype. It is appropriate when both ears are involved and the chart supports otosclerosis as the diagnosis. If laterality or type is documented more precisely, choose the more specific code.
Do not use for
Do not use this code for unilateral otosclerosis or when the diagnosis is another cause of hearing loss. Check documentation if the record only says “hearing loss” without confirming otosclerosis.
Coding tip
Confirm both laterality and subtype in the note before assigning H80.93; if either is missing, code only what is clearly documented.