ICD-10 Code H40.022 – Open angle with borderline findings, high risk, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.022 – Open angle with borderline findings, high risk, left eye
What it is
This code identifies a left eye with open-angle glaucoma suspect findings and a high risk of developing glaucoma. It is used when optic nerve, visual field, or other findings are borderline rather than diagnostic.
Clinical signs
Documentation may note suspicious optic nerve cupping, borderline visual field changes, or elevated intraocular pressure risk factors. Clinical features vary; refer to documentation.
When to use this code
Use H40.022 when the record states open-angle borderline findings in the left eye and the patient is considered high risk. This may apply during ophthalmology follow-up, glaucoma surveillance, or evaluation of suspicious but not confirmed disease. Code only when the left eye is specifically documented.
Do not use for
Do not use this code for confirmed open-angle glaucoma, other glaucoma types, or unspecified eye laterality. Check documentation if the chart does not clearly identify the left eye or high-risk status.
Coding tip
Verify laterality and whether the provider documents borderline findings rather than established glaucoma before assigning H40.022.