ICD-10 Code E08.10 – Diabetes mellitus due to underlying condition with ketoacidosis without coma (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E08.10 – Diabetes mellitus due to underlying condition with ketoacidosis without coma
What it is
This code identifies diabetes caused by another underlying condition when the patient has ketoacidosis but is not in coma. Use it when the diabetes is secondary, not primary, and the chart supports ketoacidosis.
Clinical signs
Typical findings include hyperglycemia with ketone production and metabolic acidosis. Clinical features vary; refer to documentation for the underlying condition, mental status, and whether coma is absent.
When to use this code
Use E08.10 when the provider documents diabetes due to another disease and ketoacidosis without coma. It fits encounters where the diabetes is linked to the underlying condition and the patient is not documented as comatose.
Check documentation for the causal condition and for any additional diabetes complications that may require separate coding. If the record does not clearly state ketoacidosis, do not assume it.
Do not use for
Do not use this code for primary diabetes, diabetic ketoacidosis with coma, or diabetes without ketoacidosis. If the chart is unclear about the underlying cause, check documentation.
Coding tip
Assign the underlying condition first, then code E08.10 only when the record explicitly links diabetes to ketoacidosis without coma.