ICD-10 Code E10.64 – Type 1 diabetes mellitus with hypoglycemia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E10.64 – Type 1 diabetes mellitus with hypoglycemia
What it is
E10.64 identifies type 1 diabetes mellitus complicated by hypoglycemia. Use it when the record shows low blood glucose occurring in a patient with type 1 diabetes.
Clinical signs
Clinical features may include sweating, tremor, palpitations, hunger, confusion, or other neuroglycopenic symptoms. Check documentation for the provider’s description of the hypoglycemic episode and its link to type 1 diabetes.
When to use this code
Use this code when the clinician documents type 1 diabetes with hypoglycemia, including episodes described as low blood sugar or hypoglycemic reaction. It also fits when hypoglycemia is the active diabetic complication being addressed. If the note does not clearly connect the hypoglycemia to type 1 diabetes, check documentation.
Do not use for
Do not use E10.64 for type 2 diabetes, gestational diabetes, or hypoglycemia not linked to diabetes. If the record only says “hypoglycemia” without a diabetes relationship, code the documented condition instead.
Coding tip
Confirm that the provider documents both type 1 diabetes and hypoglycemia in the same encounter before assigning E10.64.