C41.0
BillableMalignant neoplasm of bones of skull and face
HCC Category Mapping
V28HCC 21 — Breast, Prostate, Colorectal and Other Cancers and Tumors
0.545V24HCC 10 — Lymphoma and Other Cancers
0.675ESRDHCC 10 — Lymphoma and Other Cancers
0.000RxHCCHCC 22 — Cancer, Other Specified Sites
0.000What This Code Means
This code represents cancer that starts in the bones of the skull or facial bones. It is a serious condition where malignant (cancerous) cells develop in these bone structures.
Coding Tips
- •Verify the specific bone location (skull vault, facial bones, jaw) in the documentation to ensure accurate coding and consider if more specific codes apply
- •Distinguish between primary bone cancer (C41.0) and metastatic cancer that has spread to skull/facial bones, which would use different coding
Clinical Significance
Primary malignant neoplasm of the bones of the skull and face, excluding the mandible (coded separately at C41.1). These cancers include chordomas, osteosarcomas, and chondrosarcomas of the cranial vault and facial bones. Due to proximity to the brain and vital structures, these tumors carry significant surgical morbidity and often require multidisciplinary management.
Documentation Requirements
- ✓Specific skull or facial bone involved (frontal, parietal, temporal, sphenoid, ethmoid, zygomatic, maxilla, etc.)
- ✓Histologic type from biopsy or surgical pathology
- ✓Primary vs. metastatic origin — skull metastases from breast and lung cancer are far more common than primary skull tumors
- ✓Tumor staging and grade
- ✓Involvement of or proximity to intracranial structures
- ✓Treatment plan and surgical approach
Excludes 2 — Not included here, may code separately
Commonly Confused Codes
C41.1 — Malignant neoplasm of mandible; the lower jaw is coded separately from skull and facial bonesC79.51 — Secondary malignant neoplasm of bone; skull metastases from breast, lung, or kidney cancer are far more commonC71.x — Malignant neoplasm of brain; primary brain tumors are coded differently from skull bone tumorsC31.x — Malignant neoplasm of accessory sinuses; sinus cancers are mucosal, not bone
Code Hierarchy
└C41Malignant neoplasm of bone and articular cartilage of other and unspecified sites└C41.0Malignant neoplasm of bones of skull and face
└C41.0Malignant neoplasm of bones of skull and face