Drug/chem diabetes mellitus w ketoacidosis w coma

This code signifies diabetes mellitus that has been caused by a drug or chemical agent, presenting with the severe acute complication of ketoacidosis, and further complicated by a comatose state. It indicates a critical metabolic emergency resulting from insufficient insulin and high blood sugar, triggered by exogenous substances.

Use this code when documentation clearly states drug- or chemical-induced diabetes, the presence of diabetic ketoacidosis (DKA), and the patient is in a coma. This typically occurs in acute care settings following exposure to certain medications (e.g., corticosteroids, atypical antipsychotics) or toxins that impair insulin secretion or action.

• Ensure documentation explicitly links the diabetes to a drug or chemical cause; otherwise, a different diabetes code is appropriate.
• Verify the presence of both ketoacidosis and coma; if only one is present, a more specific code without the other complication should be selected.
• Sequence this code as the principal diagnosis when it is the primary reason for the encounter, followed by codes for the specific drug or chemical if known (T36-T65).