ICD-10 Code A18.50 – Tuberculosis of eye, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A18.50 – Tuberculosis of eye, unspecified
What it is
A18.50 identifies tuberculosis involving the eye when the site is not further specified. Use it for ocular TB documented by the provider without a more exact eye structure.
Clinical signs
Clinical features vary; refer to documentation. Ocular tuberculosis may present with inflammation, pain, redness, blurred vision, or other eye findings linked to TB infection.
When to use this code
Use this code when the record clearly documents tuberculosis of the eye and does not name a specific ocular site. It is appropriate for confirmed or provider-documented ocular TB when laterality or exact anatomy is not stated. Check documentation if the note only suggests exposure or suspected disease.
Do not use for
Do not use A18.50 for pulmonary TB, latent TB infection, or nonspecific eye inflammation without documented tuberculosis. If the chart identifies a more specific ocular site, code that instead.
Coding tip
Look for the exact wording “tuberculosis of eye” and verify that no more specific ocular diagnosis is documented.