ICD-10 Code C76.4 – Malignant neoplasm of upper limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C76.4 – Malignant neoplasm of upper limb
What it is
C76.4 identifies a malignant neoplasm in the upper limb when the exact primary site is not documented. Use it for cancer involving the arm, forearm, wrist, or related upper-limb tissues when the record is nonspecific.
Clinical signs
Clinical features vary; refer to documentation. You may see a documented malignant mass, pain, swelling, or functional limitation in the upper limb, but the code assignment depends on the recorded diagnosis rather than symptoms alone.
When to use this code
Use C76.4 when the provider documents a malignant neoplasm of the upper limb and does not specify a more exact anatomic site. It is appropriate when the chart identifies the limb location but not the precise bone, soft tissue, or skin site. If the lesion is described more specifically, code the more detailed diagnosis instead.
Do not use for
Do not use this code for benign tumors, uncertain masses, or metastatic disease to the upper limb without documentation of a primary upper-limb malignancy. Check documentation if the site is actually skin, bone, or a different anatomic region.
Coding tip
Query for the exact primary site before assigning C76.4, because a more specific malignant neoplasm code may be available.