ICD-10 Code H40.811 – Glaucoma with increased episcleral venous pressure, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.811 – Glaucoma with increased episcleral venous pressure, right eye
What it is
This code identifies glaucoma in the right eye caused by increased episcleral venous pressure, which can raise pressure inside the eye. It is a specific secondary glaucoma diagnosis, not primary open-angle glaucoma.
Clinical signs
Findings may include elevated intraocular pressure, optic nerve damage, and visual field loss in the right eye. Clinical features vary; refer to documentation for the cause of the elevated episcleral venous pressure.
When to use this code
Use H40.811 when the provider documents glaucoma in the right eye due to increased episcleral venous pressure. This may appear in records describing secondary glaucoma with a confirmed venous pressure cause. If laterality is not stated, check documentation before coding.
Do not use for
Do not use this code for unspecified glaucoma, bilateral disease, or glaucoma from a different mechanism. Do not assign it when the chart only notes ocular hypertension or suspected glaucoma.
Coding tip
Confirm both the glaucoma mechanism and right-eye laterality in the provider note before you code.