Malignant neoplasm of short bones of upper limb

This code signifies a primary cancerous tumor originating in the short bones of the upper extremity. This includes malignant neoplasms affecting bones such as the carpals (wrist bones) and phalanges (finger bones).

Apply this code when documentation confirms a primary malignant neoplasm located specifically in the short bones of the hand or wrist. This diagnosis is typically established through biopsy and imaging studies.

• Differentiate from malignant neoplasms of long bones of the upper limb (e.g., humerus, radius, ulna).
• Ensure the documentation specifies "malignant" and "primary" to avoid confusion with benign tumors or secondary metastases.
• Always sequence this code as the primary diagnosis when it is the reason for the encounter, unless another condition is clearly the principal diagnosis.