ICD-10 Code H40.829 – Hypersecretion Glaucoma, Unspecified Eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.829 – Hypersecretion glaucoma, unspecified eye
What it is
This code identifies glaucoma caused by excessive aqueous humor production, with the eye not further specified. Use it when the record states hypersecretion glaucoma but does not document laterality.
Clinical signs
Clinical features vary; refer to documentation. Typical glaucoma findings may include optic nerve damage, visual field loss, or elevated intraocular pressure, but the chart should specifically support hypersecretion as the mechanism.
When to use this code
Use H40.829 when the provider documents hypersecretion glaucoma and does not identify the affected eye. It is appropriate for ophthalmology notes, problem lists, or billing records that clearly name this diagnosis. If laterality is documented elsewhere, code to the more specific option.
Do not use for
Do not use this code for other glaucoma types, such as open-angle, angle-closure, or secondary glaucoma unless hypersecretion is specifically documented. Check documentation if the record only says glaucoma without a defined mechanism.
Coding tip
Confirm both the glaucoma type and laterality in the note before assigning H40.829.