ICD-10 Code E08.641 – Diabetes mellitus due to underlying condition with hypoglycemia with coma (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E08.641 – Diabetes mellitus due to underlying condition with hypoglycemia with coma
What it is
This code identifies diabetes caused by another underlying condition, complicated by hypoglycemia severe enough to cause coma. Use it when the record clearly links the diabetes and the coma-producing low blood sugar.
Clinical signs
Typical findings include altered mental status, unresponsiveness, or coma with documented hypoglycemia. Clinical features vary; refer to documentation.
When to use this code
Use E08.641 when the provider documents diabetes mellitus due to an underlying condition and specifies hypoglycemia with coma. The record should show the coma is related to hypoglycemia, not another cause. If the underlying condition is not documented, check documentation before coding.
Do not use for
Do not use this code for diabetes with hypoglycemia without coma, or for hypoglycemia unrelated to diabetes. If the coma is due to another diagnosis, this code is not appropriate.
Coding tip
Verify both the underlying-condition diabetes and the coma documentation before assigning E08.641.