Drug/chem diabetes mellitus w hyperosmolarity w coma

This code signifies diabetes mellitus that has been brought on by a drug or chemical substance, specifically presenting with a hyperosmolar state and resulting in a comatose condition. This is a severe, life-threatening complication characterized by extreme hyperglycemia, hyperosmolarity, and dehydration without significant ketoacidosis.

Apply this code when documentation clearly indicates that the patient's diabetes was induced by a medication or chemical exposure, and they are experiencing hyperosmolar hyperglycemic state (HHS) with an altered level of consciousness leading to coma. Supporting documentation should specify the drug or chemical etiology and the presence of coma due to hyperosmolarity.

• Always identify the specific drug or chemical causing the diabetes, if known, and code it additionally.
• Distinguish carefully from diabetic ketoacidosis (DKA) or other types of diabetes with coma.
• Ensure documentation explicitly links the drug/chemical exposure to the onset of diabetes and the hyperosmolar coma.