C41.1

Billable

Malignant neoplasm of mandible

HCC Category Mapping

V28HCC 21 — Breast, Prostate, Colorectal and Other Cancers and Tumors

0.545

V24HCC 10 — Lymphoma and Other Cancers

0.675

ESRDHCC 10 — Lymphoma and Other Cancers

0.000

RxHCCHCC 22 — Cancer, Other Specified Sites

0.000

What This Code Means

Cancer that starts in the lower jawbone (mandible).

Coding Tips

•The mandible is the lower jaw; do not confuse with maxilla (upper jaw) which has different codes
•Document whether the cancer is primary to the bone or metastatic from another site

Clinical Significance

Primary malignant neoplasm of the mandible (lower jawbone). This includes osteosarcoma, ameloblastic carcinoma, and other primary malignancies of the mandibular bone. The mandible is a unique coding site because it is separated from other skull and facial bones. These cancers often require extensive surgical resection affecting speech, swallowing, and facial aesthetics.

Documentation Requirements

✓Confirmation the tumor originates in the mandibular bone, not the overlying gingiva (gum) or floor of mouth mucosa
✓Histologic type from pathology (osteosarcoma, ameloblastic carcinoma, squamous cell carcinoma with bone invasion)
✓Primary vs. metastatic origin documented
✓Extent of bony involvement documented by imaging
✓Treatment plan including surgical resection and reconstruction approach
✓Involvement of adjacent structures (teeth, gingiva, floor of mouth, mental nerve)

Excludes 2 — Not included here, may code separately

carcinoma, any type except intraosseous or odontogenic of:
jaw NOS (C03.9)
lower (C03.1)
malignant neoplasm of upper jaw bone (C41.0)

Commonly Confused Codes

C41.0 — Malignant neoplasm of bones of skull and face; covers all other skull/facial bones EXCEPT mandible C03.1 — Malignant neoplasm of lower gum; gingival cancer is mucosal, not bone origin C04.x — Malignant neoplasm of floor of mouth; floor of mouth cancers may invade mandible but originate in mucosa C06.x — Malignant neoplasm of other parts of mouth; mucosal oral cancers vs. bone origin

Code Hierarchy

└C41Malignant neoplasm of bone and articular cartilage of other and unspecified sites └C41.1Malignant neoplasm of mandible

└C41.1Malignant neoplasm of mandible