ICD-10-CM > H00-H59 > H40-H42 > H40 > H40.2 > H40.22 > H40.222 H40.222 Chronic angle-closure glaucoma, left eye Non-Billable/Non-Specific Codes H40.2220..., stage unspecifiedH40.2221..., mild stageH40.2222..., moderate stageH40.2223..., severe stageH40.2224..., indeterminate stage