ICD-10 Code H40.822 – Hypersecretion glaucoma, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.822 – Hypersecretion glaucoma, left eye
What it is
H40.822 identifies hypersecretion glaucoma affecting the left eye. Use it when documentation states increased aqueous humor production is causing glaucoma in that eye.
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 record should support hypersecretion as the cause.
When to use this code
Use H40.822 when the provider specifically documents hypersecretion glaucoma in the left eye. This code fits ophthalmology notes, problem lists, or operative follow-up when the diagnosis is confirmed. If laterality or the subtype is unclear, check documentation before coding.
Do not use for
Do not use this code for unspecified glaucoma, glaucoma in the right eye, or bilateral disease. It is also incorrect when the chart does not clearly identify hypersecretion as the mechanism.
Coding tip
Confirm both the glaucoma subtype and left-eye laterality in the provider note before assigning H40.822.