ICD-10 Code E11.42 – Type 2 diabetes mellitus with diabetic polyneuropathy (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E11.42 – Type 2 diabetes mellitus with diabetic polyneuropathy
What it is
This code identifies type 2 diabetes mellitus complicated by diabetic polyneuropathy, a nerve disorder linked to chronic diabetes. Use it when the record documents diabetes and neuropathy caused by diabetes.
Clinical signs
Common findings include numbness, tingling, burning pain, or reduced sensation, usually in the feet and legs. Clinical features vary; refer to documentation.
When to use this code
Use E11.42 when the provider documents type 2 diabetes with diabetic polyneuropathy, including peripheral neuropathy attributed to diabetes. It is appropriate when the neuropathy is clearly linked to the diabetes in the assessment or problem list.
Do not assume the relationship from symptoms alone. If the chart does not clearly connect the neuropathy to diabetes, check documentation before coding.
Do not use for
Do not use this code for neuropathy with another documented cause, such as alcohol use or medication effect. Check documentation if the type of diabetes or cause of neuropathy is unclear.
Coding tip
Confirm that both type 2 diabetes and diabetic polyneuropathy are documented together before assigning E11.42.