ICD-10 Code H40.062 – Primary angle closure without glaucoma damage, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.062 – Primary angle closure without glaucoma damage, left eye
What it is
This code identifies primary angle closure in the left eye without documented glaucomatous optic nerve damage. It means the drainage angle is narrowed or blocked, but glaucoma injury has not been recorded.
Clinical signs
Findings may include a shallow anterior chamber, narrow or closed angle on gonioscopy, and elevated or intermittent intraocular pressure. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents primary angle closure affecting the left eye and specifically states there is no glaucoma damage. It fits early or pre-glaucoma cases, including confirmed angle closure without optic nerve or visual field loss. If the record does not specify laterality or damage status, check documentation.
Do not use for
Do not use this code if glaucoma damage is documented, or if the angle closure is secondary to another eye disorder. It is also wrong for unspecified eye involvement.
Coding tip
Confirm both laterality and the absence of glaucoma damage before assigning H40.062.