ICD-10 Code E09.4 – Drug or chemical induced diabetes mellitus with neurological complications (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E09.4 – Drug or chemical induced diabetes mellitus with neurological complications
What it is
This code identifies diabetes caused by a drug or chemical, with documented neurological complications. Use it when the record links the diabetes to the substance and notes nerve-related involvement.
Clinical signs
Neurological findings may include peripheral neuropathy, numbness, tingling, pain, or other nerve dysfunction. Clinical features vary; refer to documentation.
When to use this code
Use E09.4 when the provider documents drug- or chemical-induced diabetes and specifically reports neurological complications. The chart should show both the diabetes cause and the nerve involvement.
If the record only states diabetes without a neurological complication, choose a different E09 code. Check documentation when the cause, complication, or relationship is unclear.
Do not use for
Do not use this code for type 1, type 2, or gestational diabetes. Do not use it when the neurological problem is documented without a drug- or chemical-induced diabetes diagnosis.
Coding tip
Confirm the causative substance and the specific neurological complication before assigning E09.4.