Diab with moderate nonp rtnop with macular edema, left eye

This code signifies diabetes mellitus that has developed as a consequence of another underlying medical condition, rather than being primary type 1 or type 2 diabetes. The patient presents with diabetic retinopathy in the left eye, specifically at a moderate nonproliferative stage, and also has swelling of the macula (macular edema). This combination indicates significant ocular complications stemming from their secondary diabetes.

Apply this code when documentation clearly states diabetes mellitus is secondary to another condition (e.g., pancreatitis, cystic fibrosis, drug-induced) and the patient exhibits moderate nonproliferative diabetic retinopathy with macular edema affecting the left eye. Supporting documentation should include an ophthalmologist's report detailing the retinopathy stage and presence of macular edema, along with the physician's diagnosis of secondary diabetes.

• Ensure the underlying condition causing the diabetes is also coded, following sequencing guidelines.
• Verify laterality (left eye) and the specific stage of retinopathy (moderate nonproliferative) are explicitly documented.
• Differentiate from proliferative diabetic retinopathy or other stages of nonproliferative retinopathy, as these have distinct codes.