ICD-10-CM > H00-H59 > H40-H42 > H40 > H40.4 > H40.40 H40.40 Glaucoma secondary to eye inflammation, unspecified eye Non-Billable/Non-Specific Codes H40.40X0..., stage unspecifiedH40.40X1..., mild stageH40.40X2..., moderate stageH40.40X3..., severe stageH40.40X4..., indeterminate stage