ICD-10 Code E09.49 – Drug or Chemical Induced Diabetes Mellitus with Neurological Complications with Other Diabetic Neurological Complication (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E09.49 – Drug or chemical induced diabetes mellitus with neurological complications with other diabetic neurological complication
What it is
This code identifies diabetes caused by a drug or chemical, when neurological complications are documented and the specific diabetic nerve problem does not fit a more precise code. It tells you the diabetes is secondary to an external substance.
Clinical signs
Clinical features vary; refer to documentation. Neurological complications may include diabetic neuropathy, sensory changes, pain, numbness, or other nerve-related findings associated with diabetes.
When to use this code
Use E09.49 when the record links diabetes to a medication or chemical exposure and also documents a neurological complication, but not a more specific diabetic nerve diagnosis. You should code the condition only when the provider clearly states the causal relationship.
If the chart identifies a different diabetic neurological complication, choose the more specific code instead. Check documentation for the causative agent and the exact complication type.
Do not use for
Do not use this code for type 1 or type 2 diabetes, or for diabetes without a documented neurological complication. Do not use it when the neurologic problem is unrelated to diabetes.
Coding tip
Verify both the drug or chemical cause and the neurologic complication in the note before assigning E09.49.