ICD-10-CM > C00-D49 > C40-C41 > C40 > C40.2 C40.2 Malignant neoplasm of long bones of lower limb Non-Billable/Non-Specific Codes C40.20Malignant neoplasm of long bones of unspecified lower limbC40.21Malignant neoplasm of long bones of right lower limbC40.22Malignant neoplasm of long bones of left lower limb