ICD-10-CM > E00-E89 > E08-E13 > E13 > E13.3 > E13.33 E13.33 Other specified diabetes mellitus with moderate nonproliferative diabetic retinopathy Non-Billable/Non-Specific Codes E13.331Other specified diabetes mellitus with moderate nonproliferative diabetic retinopathy with macular edemaE13.3311..., right eyeE13.3312..., left eyeE13.3313..., bilateralE13.3319..., unspecified eyeE13.339Other specified diabetes mellitus with moderate nonproliferative diabetic retinopathy without macular edemaE13.3391..., right eyeE13.3392..., left eyeE13.3393..., bilateralE13.3399..., unspecified eye