ICD-10 Code E09.40 – Drug or chemical induced diabetes mellitus with neurological complications with diabetic neuropathy, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E09.40 – Drug or chemical induced diabetes mellitus with neurological complications with diabetic neuropathy, unspecified
What it is
This code identifies diabetes caused by a drug or chemical, with nerve complications. It is used when diabetic neuropathy is documented but the type is not specified.
Clinical signs
Typical findings include numbness, tingling, burning pain, or reduced sensation in the feet or hands. Clinical features vary; refer to documentation.
When to use this code
Use E09.40 when the record links diabetes to a medication or chemical exposure and also documents neuropathy. You should code it when the neuropathy is described as diabetic but the specific neuropathy type is not stated.
Confirm that the provider identifies the diabetes as drug or chemical induced, not type 1 or type 2. If the chart does not clearly connect the neuropathy to diabetes, check documentation.
Do not use for
Do not use this code for diabetic neuropathy with a known type or when the diabetes cause is not drug or chemical related. Do not use it if neuropathy is present without diabetes-related documentation.
Coding tip
Code the underlying drug-induced diabetes first, and verify the neuropathy is documented as a diabetic complication.