ICD-10 Code H18.411 – Arcus senilis, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.411 – Arcus senilis, right eye
What it is
H18.411 identifies arcus senilis in the right eye, a gray-white ring or arc at the corneal edge. It reflects lipid deposition in the cornea and is coded by laterality.
Clinical signs
Findings usually include a peripheral corneal opacity with a clear zone between the ring and the limbus. Clinical features vary; refer to documentation.
When to use this code
Use H18.411 when the provider documents arcus senilis specifically in the right eye. Apply it for a confirmed exam finding, not merely a suspected corneal change. If the note mentions both eyes, code each eye separately if supported.
Do not use for
Do not use this code for arcus senilis of the left eye or unspecified eye. Do not assign it when the corneal ring is not documented as arcus senilis; check documentation.
Coding tip
Verify laterality in the ophthalmology note before coding, because H18.411 is right-eye specific.