ICD-10 Code H18.339 – Rupture in Descemet’s membrane, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.339 – Rupture in Descemet’s membrane, unspecified eye
What it is
This code identifies a rupture of Descemet’s membrane, the thin layer inside the cornea, when the affected eye is not specified. It documents a structural corneal injury rather than a general eye complaint.
Clinical signs
Clinical features vary; refer to documentation. Findings may include corneal edema, blurred vision, and a visible break or wrinkle in Descemet’s membrane on eye examination.
When to use this code
Use H18.339 when the provider documents rupture in Descemet’s membrane and does not identify the right or left eye. This may appear after corneal trauma, surgery, or another documented corneal event. Code only what is stated in the record.
Do not use for
Do not use this code for unspecified corneal injury without documented Descemet’s membrane rupture. If the record names a specific eye, choose the laterality-specific code instead. Check documentation.
Coding tip
Verify laterality in the note before assigning H18.339, because unspecified eye is appropriate only when the provider does not document right or left.