Drug or chemical induced diabetes mellitus w hyperglycemia

This code signifies diabetes mellitus that has developed as a direct consequence of drug therapy or exposure to specific chemicals, and is currently characterized by elevated blood glucose levels. It indicates a secondary form of diabetes, distinct from Type 1 or Type 2, where an exogenous substance is the causative agent.

Apply this code when documentation clearly links the onset of diabetes and current hyperglycemia to a prescribed medication (e.g., corticosteroids, certain antipsychotics) or chemical exposure. Supporting documentation should include a physician's statement identifying the drug or chemical as the etiology and confirming the presence of hyperglycemia.

• Always code the specific drug or chemical responsible for the induced diabetes as an additional diagnosis.
• Do not use this code for diabetes that existed prior to drug/chemical exposure, even if the substance exacerbates the condition.
• Distinguish carefully from other secondary diabetes types, such as post-pancreatectomy diabetes (E89.1).