Drug/chem diab with severe nonp rtnop w/o mclr edema, unsp

This code signifies diabetes mellitus caused by medication or chemical exposure, specifically presenting with severe nonproliferative diabetic retinopathy in an unspecified eye, without any associated macular edema. It indicates a significant stage of retinal damage due to drug-induced diabetes, prior to the development of new blood vessel growth.

Use this code when documentation clearly states drug or chemical-induced diabetes mellitus and severe nonproliferative diabetic retinopathy is diagnosed, without mention of macular edema, and the affected eye is not specified. This applies to patients whose diabetes etiology is directly linked to pharmaceutical agents or toxic chemical exposure.

• Always sequence the drug or chemical causing the diabetes as an additional code.
• Ensure documentation specifies "severe nonproliferative" and explicitly rules out macular edema.
• If the affected eye is known, a more specific code (e.g., right, left, bilateral) should be used instead.