ICD-10 Code C47.0 – Malignant neoplasm of peripheral nerves of head, face and neck (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C47.0 – Malignant neoplasm of peripheral nerves of head, face and neck
What it is
This code identifies a malignant tumor arising from the peripheral nerves in the head, face, or neck. Use it when the record documents cancer in these nerve structures, not a skin, salivary, or brain tumor.
Clinical signs
Clinical features vary; refer to documentation. Findings may include a growing mass, pain, numbness, weakness, or nerve dysfunction in the involved area, but confirmation depends on the provider’s diagnosis and pathology.
When to use this code
Use C47.0 when the clinician documents a primary malignant neoplasm of a peripheral nerve in the head, face, or neck. It is appropriate for confirmed tumors, suspected lesions later documented as malignant, or follow-up care tied to that diagnosis.
If the record only states a mass, neuropathy, or facial pain without a malignant diagnosis, do not assign this code. Check documentation for the exact anatomic site and whether the neoplasm is primary or metastatic.
Do not use for
Do not use this code for benign nerve tumors, unspecified neoplasms, or cancers that originate in adjacent structures and merely involve the nerves. Check documentation if the site or malignant nature is unclear.
Coding tip
Verify the provider’s wording and site detail; C47.0 is specific to malignant peripheral nerve tumors of the head, face, or neck.