ICD-10-CM > H00-H59 > H40-H42 > H40 > H40.0 > H40.02 H40.02 Open angle with borderline findings, high risk Non-Billable/Non-Specific Applicable To Open angle, high risk Codes H40.021Open angle with borderline findings, high risk, right eyeH40.022Open angle with borderline findings, high risk, left eyeH40.023Open angle with borderline findings, high risk, bilateralH40.029Open angle with borderline findings, high risk, unspecified eye