ICD-10 Code H40.023 – Open angle with borderline findings, high risk, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.023 – Open angle with borderline findings, high risk, bilateral
What it is
This code identifies bilateral open-angle glaucoma suspect status with borderline optic nerve or visual field findings and a high risk of developing glaucoma. Use it when the record shows concern for progression, but not confirmed glaucoma.
Clinical signs
Findings may include suspicious optic nerve cupping, borderline visual field changes, or elevated intraocular pressure. Clinical features vary; refer to documentation.
When to use this code
Use H40.023 when both eyes have open-angle borderline findings and the provider documents high risk for glaucoma. It fits follow-up visits for monitoring a glaucoma suspect, especially when the diagnosis remains unconfirmed. Check documentation if the risk basis is unclear.
Do not use for
Do not use this code for confirmed open-angle glaucoma or for borderline findings in only one eye. It is also not appropriate when the chart does not document high risk.
Coding tip
Verify bilateral involvement and the provider’s glaucoma-suspect assessment before assigning H40.023.