ICD-10 Code C40.0 – Malignant neoplasm of scapula and long bones of upper limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C40.0 – Malignant neoplasm of scapula and long bones of upper limb
What it is
This code identifies a malignant bone tumor arising in the scapula or the long bones of the upper limb, such as the humerus, radius, or ulna. Use it when the documentation specifies primary cancer in one of these sites.
Clinical signs
Typical findings include localized bone pain, swelling, tenderness, or a palpable mass near the affected bone. Imaging or biopsy usually confirms a malignant bone lesion; clinical features vary, so refer to documentation.
When to use this code
Use C40.0 when the provider documents a primary malignant neoplasm of the scapula or an upper-limb long bone. It also fits when the site is clearly stated in the operative note, pathology report, or oncology assessment. If the exact bone is not named, check documentation before coding.
Do not use for
Do not use this code for benign bone tumors, metastatic disease to the upper limb bones, or malignancies in unrelated skeletal sites. If the record only says “bone cancer” without location, check documentation.
Coding tip
Verify the exact bone site and whether the tumor is primary before assigning C40.0.