ICD-10 Code H40.029 – Open angle with borderline findings, high risk, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.029 – Open angle with borderline findings, high risk, unspecified eye
What it is
This code describes an open-angle glaucoma suspect in an unspecified eye with borderline findings and a higher risk profile. It indicates concern for possible glaucoma, but not confirmed disease.
Clinical signs
Findings may include suspicious optic nerve changes, borderline intraocular pressure, or visual field concerns. Clinical features vary; refer to documentation.
When to use this code
Use H40.029 when the record documents borderline open-angle findings and the patient is considered high risk, but glaucoma is not diagnosed. Apply it when the affected eye is not specified. If the note identifies a right or left eye, use the more specific code.
Do not use for
Do not use this code for confirmed open-angle glaucoma or for borderline findings without high-risk status. Check documentation if the chart does not clearly support suspect status.
Coding tip
Confirm both the borderline finding and the high-risk designation before assigning this code.