ICD-10 Code E13.42 – Other specified diabetes mellitus with diabetic polyneuropathy (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E13.42 – Other specified diabetes mellitus with diabetic polyneuropathy
What it is
This code identifies diabetes mellitus that does not fit the other standard categories and is complicated by diabetic polyneuropathy. Use it when the record clearly states both the diabetes type and the neuropathy.
Clinical signs
Common findings include numbness, tingling, burning pain, or reduced sensation in the feet or hands. Clinical features vary; refer to documentation for the specific neuropathic pattern and confirmed diabetic association.
When to use this code
Use E13.42 when the provider documents other specified diabetes mellitus with diabetic polyneuropathy, or when the diabetes type is specified as other and the neuropathy is attributed to diabetes. Code it from the documented diagnosis, not from symptoms alone.
If the note lists diabetes with peripheral neuropathy but does not specify diabetic polyneuropathy, check documentation before assigning this code. Make sure the record supports both conditions and that no more specific diabetes code applies.
Do not use for
Do not use this code for diabetes without neuropathy, or for neuropathy that is not documented as diabetic. Do not substitute it when the diabetes type is better classified elsewhere.
Coding tip
Confirm that the provider links the neuropathy to diabetes and documents the diabetes as “other specified” before assigning E13.42.