ICD-10-CM > H00-H59 > H40-H42 > H40 > H40.2 > H40.22 > H40.229 H40.229 Chronic angle-closure glaucoma, unspecified eye Non-Billable/Non-Specific Codes H40.2290..., stage unspecifiedH40.2291..., mild stageH40.2292..., moderate stageH40.2293..., severe stageH40.2294..., indeterminate stage