ICD-10 Code H40.211 – Acute angle-closure glaucoma, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.211 – Acute angle-closure glaucoma, right eye
What it is
This code identifies a sudden, severe rise in eye pressure from angle-closure glaucoma affecting the right eye. It means the drainage angle is blocked, and the condition is acute.
Clinical signs
Typical findings include eye pain, redness, blurred vision, headache, halos around lights, and a mid-dilated pupil. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly states acute angle-closure glaucoma in the right eye. It also applies when the provider documents an acute closed-angle attack limited to the right eye.
If laterality is confirmed as right eye, code H40.211 rather than an unspecified glaucoma code. Check documentation when the note describes glaucoma without specifying acute angle closure or laterality.
Do not use for
Do not use this code for chronic angle-closure glaucoma, primary open-angle glaucoma, or glaucoma in another eye. Check documentation if the record only says “glaucoma” or “suspected glaucoma.”
Coding tip
Verify both acuity and laterality in the provider note before assigning H40.211.