ICD-10 Code C40.00 – Malignant neoplasm of scapula and long bones of unspecified upper limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C40.00 – Malignant neoplasm of scapula and long bones of unspecified upper limb
What it is
C40.00 identifies a malignant bone tumor in the scapula or a long bone of an upper limb when the side is not specified. Use it for primary bone cancer documented in these locations.
Clinical signs
Typical findings include persistent localized bone pain, swelling, or a palpable mass. Imaging and biopsy usually support the diagnosis; clinical features vary, so refer to documentation.
When to use this code
Use this code when the provider documents a malignant neoplasm arising in the scapula or a long bone of an upper extremity and does not identify laterality. It also fits when the record states the site is unspecified but clearly within these bones. Check documentation if the tumor is metastatic, secondary, or in a different bone.
Do not use for
Do not use C40.00 for benign bone tumors, soft tissue malignancies, or metastatic disease to bone. If the site is specified as right or left upper limb, choose the more specific code.
Coding tip
Verify the exact bone and laterality in the pathology or oncology note before assigning C40.00.