ICD-10 Code H40.013 – Open angle with borderline findings, low risk, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.013 – Open angle with borderline findings, low risk, bilateral
What it is
This code identifies bilateral open-angle glaucoma suspect status with borderline findings and low risk. It is used when the optic nerve or other glaucoma markers are not clearly normal, but glaucoma is not established.
Clinical signs
Findings may include suspicious optic disc appearance, borderline visual field changes, or other glaucoma-suspect features. Clinical features vary; refer to documentation.
When to use this code
Use H40.013 when the provider documents borderline open-angle findings in both eyes and specifically notes low risk. It fits glaucoma surveillance visits where the patient is being monitored rather than treated for confirmed glaucoma. Use the code only when bilateral involvement is documented.
Do not use for
Do not use this code for confirmed open-angle glaucoma, ocular hypertension without borderline findings, or unilateral disease. Check documentation if the record does not clearly state low risk and bilateral involvement.
Coding tip
Verify that “borderline findings,” “low risk,” and “bilateral” are all documented before assigning H40.013.