ICD-10 Code H18.331 – Rupture in Descemet’s membrane, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.331 – Rupture in Descemet’s membrane, right eye
What it is
H18.331 identifies a rupture in Descemet’s membrane affecting the right eye. This corneal injury involves a tear in the thin membrane lining the back of the cornea.
Clinical signs
Clinical features vary; refer to documentation. Typical records may note corneal edema, reduced vision, or a history of eye trauma or surgery affecting the right eye.
When to use this code
Use this code when the provider documents a rupture of Descemet’s membrane in the right eye. It fits cases where the diagnosis is confirmed clinically or recorded as the reason for evaluation. If the chart only mentions corneal injury without this specific finding, check documentation before coding.
Do not use for
Do not use it for corneal abrasion, simple corneal laceration, or left-eye or bilateral involvement. If the record does not clearly identify Descemet’s membrane rupture, do not assume this code.
Coding tip
Verify laterality and the exact anatomic term in the provider note before assigning H18.331.