ICD-10 Code H40.02 – Open angle with borderline findings, high risk (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.02 – Open angle with borderline findings, high risk
What it is
This code identifies a glaucoma-suspect state with open angles and borderline optic nerve or visual field findings, plus a higher risk of developing glaucoma. It is used when disease is not yet definite glaucoma.
Clinical signs
Findings may include suspicious optic disc cupping, borderline visual field changes, or elevated concern based on family history or other risk factors. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents open-angle borderline findings and specifically notes high risk for progression. It fits follow-up visits for glaucoma suspicion, not confirmed glaucoma. Check documentation for the exact risk language and laterality if required by your coding setting.
Do not use for
Do not use it for confirmed open-angle glaucoma, ocular hypertension alone, or nonspecific eye screening without borderline findings. If the record does not support high-risk status, check documentation.
Coding tip
Code only when the chart clearly states both borderline findings and high risk; otherwise, query the provider.