ICD-10 Code H40.213 – Acute angle-closure glaucoma, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.213 – Acute angle-closure glaucoma, bilateral
What it is
H40.213 identifies acute angle-closure glaucoma affecting both eyes. It means the drainage angle is suddenly blocked in each eye, causing a rapid rise in intraocular pressure.
Clinical signs
Typical findings include sudden eye pain, blurred vision, halos around lights, red eyes, headache, and nausea. Clinical features vary; refer to documentation for laterality and acuity.
When to use this code
Use this code when the provider documents an acute angle-closure glaucoma episode in both eyes. It is appropriate for emergency visits, ophthalmology assessments, or hospital records when bilateral involvement is clearly stated. Check documentation if laterality is unclear.
Do not use for
Do not use it for chronic or unspecified glaucoma, or for angle-closure disease without an acute episode. Do not assign it when only one eye is documented.
Coding tip
Confirm both the acute nature and bilateral laterality in the provider note before assigning H40.213.