ICD-10 Code C47.4 – Malignant neoplasm of peripheral nerves of abdomen (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C47.4 – Malignant neoplasm of peripheral nerves of abdomen
What it is
C47.4 identifies a malignant tumor arising from the peripheral nerves in the abdominal region. Use it when documentation specifies a cancer of abdominal peripheral nerves, including related nerve sheath malignancies, if stated that way.
Clinical signs
Clinical features vary; refer to documentation. Patients may present with an abdominal mass, localized pain, or neurologic symptoms related to nerve involvement, but the diagnosis should be supported by imaging, pathology, or specialist assessment.
When to use this code
Use this code when the provider documents malignant neoplasm of peripheral nerves in the abdomen or an equivalent anatomic description. It is appropriate for confirmed primary tumors in that site, including operative, pathology, or oncology notes that clearly identify the location.
If the record only states “malignant peripheral nerve tumor” without an abdominal site, check documentation before coding. You should also confirm whether the lesion is primary or metastatic, because that affects code selection.
Do not use for
Do not use C47.4 for benign peripheral nerve tumors, unspecified soft tissue masses, or malignancies in non-abdominal nerve locations. If the documentation does not clearly identify the abdomen, check documentation.
Coding tip
Capture the exact anatomic site from the pathology or oncology note, because “peripheral nerves” alone is not enough to justify C47.4.