ICD-10 Code E10.11 – Type 1 diabetes mellitus with ketoacidosis with coma (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E10.11 – Type 1 diabetes mellitus with ketoacidosis with coma
What it is
This code identifies type 1 diabetes with diabetic ketoacidosis and coma. Use it when the record shows both ketoacidosis and a comatose state linked to the diabetes.
Clinical signs
Patients typically present with severe hyperglycemia symptoms, dehydration, nausea, vomiting, abdominal pain, and altered mental status. Clinical features vary; refer to documentation.
When to use this code
Use E10.11 when the provider documents type 1 diabetes, ketoacidosis, and coma in the same encounter. It also fits when coma is clearly attributed to diabetic ketoacidosis rather than another cause. Check documentation if the level of consciousness is unclear.
Do not use for
Do not use this code for type 2 diabetes, diabetic ketoacidosis without coma, or coma from a different diagnosis. If coma is not documented, select the non-coma ketoacidosis code instead.
Coding tip
Confirm that coma is explicitly documented and linked to the diabetic ketoacidosis before assigning E10.11.