ICD-10 Code H40.063 – Primary angle closure without glaucoma damage, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.063 – Primary angle closure without glaucoma damage, bilateral
What it is
This code identifies primary angle closure affecting both eyes without documented glaucomatous optic nerve damage. It means the drainage angle is narrowed or closed, but glaucoma injury has not been recorded.
Clinical signs
Findings may include narrow anterior chamber angles on examination and evidence of angle closure in both eyes. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents bilateral primary angle closure and specifically states there is no glaucoma damage. It fits cases where angle closure is present, but optic nerve damage, visual field loss, or established glaucoma is not documented. Check documentation if the record is unclear.
Do not use for
Do not use this code if glaucoma damage is documented, because that requires a different code. Also avoid it when the condition is unilateral or when the record only mentions suspected glaucoma without confirmation.
Coding tip
Confirm both laterality and the absence of glaucoma damage before assigning H40.063.