ICD-10 Code H18.41 – Arcus senilis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.41 – Arcus senilis
What it is
H18.41 identifies arcus senilis, a gray-white or yellowish ring at the edge of the cornea. It is a corneal finding, not a disease by itself.
Clinical signs
You may see a peripheral corneal ring, often more noticeable in older adults. Clinical features vary; refer to documentation if the appearance is atypical or if another corneal disorder is suspected.
When to use this code
Use H18.41 when the chart specifically documents arcus senilis as the diagnosis or reason for the eye finding. It fits routine ophthalmic documentation when the corneal ring is noted without another primary corneal condition. If the record instead describes a different corneal opacity, check documentation.
Do not use for
Do not use this code for corneal arcus documented as part of another condition unless the provider names arcus senilis. Do not use it when the finding is absent or the record only says “corneal ring” without confirmation.
Coding tip
Code the exact provider term and avoid assuming laterality or severity; arcus senilis is documented as a corneal finding, not a treatment diagnosis.