ICD-10 Code C47.6 – Malignant neoplasm of peripheral nerves of trunk, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C47.6 – Malignant neoplasm of peripheral nerves of trunk, unspecified
What it is
C47.6 identifies a malignant tumor arising from the peripheral nerves of the trunk when the site is not further specified. Use it for documented cancer of a peripheral nerve in the chest, abdomen, back, or other trunk region.
Clinical signs
Clinical features vary; refer to documentation. Reported findings may include a growing mass, local pain, tenderness, numbness, or weakness related to nerve involvement, but the record should support the malignant nerve origin and trunk location.
When to use this code
Use this code when the provider documents a malignant neoplasm of a peripheral nerve in the trunk and does not name a more specific site. It also fits when the record clearly places the tumor in the trunk but leaves the exact nerve unspecified. Check documentation if the lesion is described only as soft tissue, skin, or another non-nerve structure.
Do not use for
Do not use C47.6 for benign peripheral nerve tumors, metastatic disease to the trunk, or neoplasms outside the trunk. If the site is a specific peripheral nerve or another body region, choose the more precise code.
Coding tip
Confirm both malignancy and trunk location in the pathology or provider note before assigning C47.6.