ICD-10-CM > H00-H59 > H40-H42 > H40 > H40.2 > H40.22 > H40.221 H40.221 Chronic angle-closure glaucoma, right eye Non-Billable/Non-Specific Codes H40.2210..., stage unspecifiedH40.2211..., mild stageH40.2212..., moderate stageH40.2213..., severe stageH40.2214..., indeterminate stage