Malignant neoplasm of lower limb

This code signifies the presence of a cancerous tumor originating in the tissues of the lower extremity, including the hip, thigh, leg, ankle, and foot. It indicates a primary malignant growth, meaning the cancer started in this location rather than spreading from another site.

This code is appropriate for documenting a confirmed primary malignant neoplasm of any unspecified site within the lower limb. It is used when the specific anatomical location (e.g., femur, tibia, muscle of thigh) is not further specified in the diagnostic statement or pathology report.

• Always seek more specific anatomical site codes within the 170-172 series if available in the documentation.
• Do not use this code for secondary (metastatic) malignancies; refer to codes in the 196-198 series for those cases.
• Ensure documentation clearly states "malignant neoplasm" and specifies the lower limb as the primary site.