ICD-10 Code E08.9 – Diabetes mellitus due to underlying condition without complications (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E08.9 – Diabetes mellitus due to underlying condition without complications
What it is
This code identifies diabetes that is caused by another underlying condition and has no documented complications. Use it when the record clearly links the diabetes to the underlying disease and does not note a specific complication.
Clinical signs
Clinical features vary; refer to documentation. You may see signs of diabetes such as abnormal glucose control, but this code itself does not describe a complication or severity detail.
When to use this code
Use E08.9 when the provider documents diabetes secondary to another condition and states there are no complications. It is appropriate for encounters focused on the diabetes diagnosis or routine follow-up when the chart supports the causal relationship. Check documentation if the underlying condition is unclear.
Do not use for
Do not use this code if a diabetic complication is documented, such as kidney, eye, neurologic, or circulatory involvement. Also avoid it when diabetes is not linked to an underlying condition.
Coding tip
Always code the underlying condition first when the record supports diabetes due to that condition, and verify that “without complications” is explicitly or implicitly documented.