C76.8
BillableMalignant neoplasm of other specified ill-defined sites
HCC Category Mapping
V28HCC 23 — Melanoma and Other Skin Cancers
0.251V24HCC 12 — Breast, Prostate, and Other Cancers and Tumors
0.150ESRDHCC 12 — Breast, Prostate, and Other Cancers and Tumors
0.000RxHCCHCC 22 — Cancer, Other Specified Sites
0.000What This Code Means
Cancer that has developed in body locations that are not well-defined or do not fit into other specific categories.
Coding Tips
- •Use this code only when the cancer site is poorly defined or documented in an unusual location
- •Review documentation carefully to ensure a more specific site code cannot be assigned
Clinical Significance
Malignant neoplasm of other specified ill-defined sites captures malignancies in anatomical locations not covered by more specific ill-defined site codes (head/neck, thorax, abdomen, pelvis, limbs). This is a catch-all code for overlapping or contiguous malignancies where the point of origin cannot be determined and no more specific ill-defined site code applies.
Documentation Requirements
- ✓Documentation confirming malignancy in a site not covered by C76.0-C76.52
- ✓Description of the anatomical location of the tumor
- ✓Pathology report with histological type
- ✓Thorough workup attempting to identify specific organ of origin
- ✓Justification for why a more specific code cannot be assigned
Commonly Confused Codes
C76.0-C76.52 — Other ill-defined site codes: Use specific regional codes when the region is identifiedC80.0 — Disseminated malignant neoplasm: Use for widely metastatic disease without identifiable primaryC80.1 — Malignant neoplasm without specification of site: Cancer of unknown primaryC49.8-C49.9 — Connective tissue, overlapping/unspecified: Use for soft tissue sarcomas
Code Hierarchy
└C76Malignant neoplasm of other and ill-defined sites└C76.8Malignant neoplasm of other specified ill-defined sites
└C76.8Malignant neoplasm of other specified ill-defined sites