Drug or chemical induced diabetes mellitus with foot ulcer

This code signifies diabetes mellitus that has been caused by a drug or chemical agent, specifically presenting with a foot ulcer. It indicates a secondary form of diabetes where an exogenous substance is the etiology, rather than an autoimmune process or insulin resistance, and a lower extremity ulcer is a current complication.

Apply this code when documentation clearly states drug- or chemical-induced diabetes and a foot ulcer is present. This is appropriate for patients whose diabetes onset is directly attributable to medication (e.g., corticosteroids) or chemical exposure, and who are currently being treated for an ulcer on the foot.

• Always identify the specific drug or chemical causing the diabetes, if known, and code it as an adverse effect or poisoning.
• Ensure documentation specifies "drug-induced" or "chemical-induced" diabetes, not just "secondary diabetes."
• Do not use this code for type 1, type 2, or other specified types of diabetes with foot ulcers; those have distinct codes.