ICD-10 Code E08.42 – Diabetes mellitus due to underlying condition with diabetic polyneuropathy (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E08.42 – Diabetes mellitus due to underlying condition with diabetic polyneuropathy
What it is
This code identifies diabetes caused by another underlying condition, with diabetic polyneuropathy affecting the nerves. Use it when documentation links the diabetes to a specific cause and confirms neuropathy.
Clinical signs
Clinical features vary; refer to documentation. Typical neuropathy findings include numbness, tingling, burning pain, reduced sensation, or weakness in the extremities.
When to use this code
Use E08.42 when the record states diabetes is due to an underlying condition and also documents diabetic polyneuropathy. The underlying condition should be identified in the chart. If the cause of diabetes or the neuropathy link is unclear, check documentation before coding.
Do not use for
Do not use this code for diabetes without a documented underlying condition or for neuropathy that is not linked to diabetes. Check documentation if the record only says peripheral neuropathy.
Coding tip
Code the underlying condition first, then assign E08.42 only when the diabetes-neuropathy relationship is clearly documented.