ICD-10-CM > E00-E89 > E08-E13 > E10 > E10.3 > E10.32 > E10.329 E10.329 Type 1 diabetes mellitus with mild nonproliferative diabetic retinopathy without macular edema Non-Billable/Non-Specific Codes E10.3291..., right eyeE10.3292..., left eyeE10.3293..., bilateralE10.3299..., unspecified eye