ICD-10-CM > H00-H59 > H40-H42 > H40 > H40.1 > H40.11 > H40.113 H40.113 Primary open-angle glaucoma, bilateral Non-Billable/Non-Specific Codes H40.1130..., stage unspecifiedH40.1131..., mild stageH40.1132..., moderate stageH40.1133..., severe stageH40.1134..., indeterminate stage