Drug/chem diab with severe nonp rtnop with mclr edema, r eye

This code signifies diabetes mellitus caused by a drug or chemical, specifically presenting with severe nonproliferative diabetic retinopathy affecting the right eye, complicated by macular edema. This indicates significant retinal damage without new vessel growth, impacting central vision due to fluid accumulation.

Apply this code when a patient's diabetes is directly attributed to medication or chemical exposure, and ophthalmological examination confirms severe nonproliferative diabetic retinopathy with macular edema in the right eye. Documentation must clearly link the diabetes to a drug/chemical and specify the severity of retinopathy and presence of macular edema in the right eye.

• Ensure documentation explicitly states "severe nonproliferative" and "macular edema" for the right eye.
• Always sequence the drug/chemical causing the diabetes as an additional code (e.g., T36-T65 with 5th or 6th character indicating adverse effect).
• Differentiate from other forms of diabetes (e.g., type 1, type 2) and other stages of diabetic retinopathy.