ICD-10 Code H18.33 – Rupture in Descemet’s membrane (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.33 – Rupture in Descemet’s membrane
What it is
H18.33 identifies a rupture of Descemet’s membrane, the thin layer inside the cornea. Use it when documentation specifically states a tear or break in this membrane.
Clinical signs
Clinical features vary; refer to documentation. Commonly, records may note corneal injury, corneal edema, or visual disturbance after trauma or eye surgery.
When to use this code
Use H18.33 when the provider documents rupture in Descemet’s membrane as the diagnosis. It may appear after blunt trauma, penetrating injury, or an eye procedure if the note clearly identifies this finding.
If the chart only describes a corneal abrasion, edema, or unspecified corneal injury, check documentation before assigning this code.
Do not use for
Do not use this code for other corneal disorders without a documented Descemet membrane rupture. Do not guess based on trauma alone; check documentation.
Coding tip
Code from the provider’s exact wording and confirm laterality or associated injury details when they are documented.