ICD-10-CM > H00-H59 > H40-H42 > H40 > H40.1 > H40.11 > H40.111 H40.111 Primary open-angle glaucoma, right eye Non-Billable/Non-Specific Codes H40.1110..., stage unspecifiedH40.1111..., mild stageH40.1112..., moderate stageH40.1113..., severe stageH40.1114..., indeterminate stage