ICD-10 Code C47 – Malignant neoplasm of peripheral nerves and autonomic nervous system (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C47 – Malignant neoplasm of peripheral nerves and autonomic nervous system
What it is
This code identifies a malignant tumor arising in the peripheral nerves or autonomic nervous system. Use it when documentation confirms cancer in these nerve structures.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include a growing mass, pain, or neurologic deficits related to nerve involvement, but the exact presentation depends on the tumor site.
When to use this code
Use C47 when the provider documents a primary malignant neoplasm of a peripheral nerve or autonomic nerve structure. It also fits when pathology or imaging supports that specific anatomic origin and no more specific subcategory is available.
Code the documented site as accurately as possible, and check whether the record specifies a more exact nerve location. If the note only says “nerve tumor” without malignant confirmation, check documentation.
Do not use for
Do not use this code for benign nerve tumors, metastatic disease to nerves, or unspecified soft tissue masses. If the diagnosis is unclear, check documentation before coding.
Coding tip
Confirm both malignancy and nerve origin in the record before assigning C47.