ICD-10 Code E08.649 – Diabetes mellitus due to underlying condition with hypoglycemia without coma (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E08.649 – Diabetes mellitus due to underlying condition with hypoglycemia without coma
What it is
This code identifies diabetes mellitus that is caused by another underlying condition and is associated with hypoglycemia, but not coma. Use it when the record links the diabetes to a secondary cause and documents low blood sugar.
Clinical signs
Clinical features vary; refer to documentation. Hypoglycemia may be noted by symptoms such as sweating, shakiness, confusion, or weakness, but the chart must support the diagnosis and show that coma is not present.
When to use this code
Use this code when the provider documents diabetes due to an underlying condition and specifically states hypoglycemia without coma. It is appropriate when the relationship between the diabetes and the underlying condition is documented. Check documentation if the cause, type, or severity is unclear.
Do not use for
Do not use this code for diabetes without hypoglycemia, for hypoglycemia unrelated to diabetes, or when coma is documented. If the record does not clearly link the diabetes to an underlying condition, check documentation.
Coding tip
Confirm both the secondary cause and the absence of coma before assigning E08.649.