ICD-10-CM > C00-D49 > C40-C41 > C40 > C40.9 C40.9 Malignant neoplasm of unspecified bones and articular cartilage of limb Non-Billable/Non-Specific Codes C40.90Malignant neoplasm of unspecified bones and articular cartilage of unspecified limbC40.91Malignant neoplasm of unspecified bones and articular cartilage of right limbC40.92Malignant neoplasm of unspecified bones and articular cartilage of left limb