Diabetes with severe nonp rtnop with macular edema, left eye

This code signifies diabetes that is a direct consequence of another underlying disease or condition, specifically presenting with severe nonproliferative diabetic retinopathy affecting the left eye. A key feature is the presence of macular edema, indicating fluid accumulation in the macula, which can significantly impair vision.

Use this code when documentation clearly states diabetes mellitus is secondary to another condition (e.g., cystic fibrosis, pancreatic disease) and the patient has severe nonproliferative diabetic retinopathy with macular edema in the left eye. This diagnosis requires ophthalmological findings confirming the specific retinopathy stage and macular involvement.

• Always sequence the underlying condition causing the diabetes first, followed by this code.
• Ensure documentation specifies "severe nonproliferative" and "macular edema" for the left eye; do not use for moderate or mild stages, or if macular edema is absent.
• Verify the laterality (left eye) is explicitly documented to avoid incorrect coding.