Malignant neoplasm of right lower limb

This code signifies a primary cancerous tumor originating in the tissues of the patient's right lower extremity. This includes malignant neoplasms affecting the bones, soft tissues, and other structures from the hip down to the foot on the right side. It indicates the initial site of the cancer, not a metastatic spread.

Assign this code when documentation clearly states a primary malignant neoplasm located specifically in the right lower limb. This is appropriate for initial diagnoses, treatment planning, and follow-up care where the primary site is confirmed to be the right lower extremity. Supporting documentation includes pathology reports, operative reports, and physician notes detailing the tumor's origin.

• Ensure the documentation specifies "primary" malignancy; secondary or metastatic sites require different codes.
• Verify the laterality (right) and anatomical site (lower limb) are explicitly stated.
• Do not use this code for benign neoplasms or neoplasms of uncertain behavior; these have distinct code categories.