E11.01

HCC Category Mapping

What This Code Means

Type 2 diabetes with a dangerous condition where blood becomes too concentrated (hyperosmolarity) and the patient is unconscious. This is a medical emergency requiring immediate treatment.

Coding Tips

• •This code indicates a life-threatening complication; ensure the coma status is documented in the medical record
• •Do not use this code if the patient is conscious or alert; use E11.00 instead

Clinical Significance

Type 2 diabetes mellitus with hyperosmolarity with coma represents the most severe form of hyperosmolar hyperglycemic state, where extreme dehydration and metabolic derangement have caused loss of consciousness. This is a medical emergency with mortality rates exceeding 20%, requiring immediate intensive care management. Patients present with extreme hyperglycemia (often above 800 mg/dL), profound dehydration, and neurological deterioration.

Documentation Requirements

• ✓The medical record must document coma or loss of consciousness in the setting of diabetic hyperosmolarity in a Type 2 diabetic patient.
• ✓Blood glucose, serum osmolarity, renal function, and electrolyte values should be recorded.
• ✓Glasgow Coma Scale or other consciousness assessment, intensive care unit admission notes, and treatment with aggressive fluid resuscitation and insulin therapy must be documented.

Commonly Confused Codes