Question: A patient with nonproliferative diabetic retinopathy reports to the optometrist for a scanning laser glaucoma testing (SLGT). What is the proper diagnosis coding for this visit? Arkansas Subscriber Answer: It depends on the severity of the retinopathy. ICD-9 has several codes for the condition. Do this: Check the doctor's encounter notes to see if you can find any more information on the type of retinopathy. Then, choose one of the following diagnosis codes: - 362.03 -- Nonproliferative diabetic retinopathy NOS - 362.04 -- Mild nonproliferative diabetic retinopathy - 362.05 -- Moderate nonproliferative diabetic retinopathy - 362.06 -- Severe nonproliferative diabetic retinopathy. Regardless of which diagnosis you choose, be sure to report 92135 (Scanning computerized ophthalmic diagnostic imaging with interpretation and report, unilateral) for the scanning.