Type 2 diabetes mellitus with ketoacidosis with coma

This code identifies a severe complication of type 2 diabetes where the body, lacking sufficient insulin, breaks down fat for energy, leading to a buildup of ketones in the blood (ketoacidosis). The patient's metabolic imbalance is profound enough to cause a state of unconsciousness or unresponsiveness. It signifies an acute, life-threatening diabetic emergency.

Apply this code when documentation clearly indicates a patient with type 2 diabetes presenting with diabetic ketoacidosis (DKA) and an associated comatose state. This typically occurs in emergency settings or during acute hospital admissions. Supporting documentation should include laboratory findings confirming DKA (e.g., high blood glucose, metabolic acidosis, ketones in urine/blood) and a physician's note explicitly stating coma.

• Always sequence the diabetes code first, as it is the underlying condition.
• Ensure documentation differentiates between type 1 and type 2 diabetes; do not use this code for type 1 DKA with coma.
• Verify that the coma is directly attributed to the ketoacidosis, not another co-occurring condition.