ICD-10-CM > E00-E89 > E08-E13 > E10 > E10.3 > E10.33 > E10.339 E10.339 Type 1 diabetes mellitus with moderate nonproliferative diabetic retinopathy without macular edema Non-Billable/Non-Specific Codes E10.3391..., right eyeE10.3392..., left eyeE10.3393..., bilateralE10.3399..., unspecified eye