C34.80
BillableMalignant neoplasm of overlapping sites of unspecified bronchus and lung
HCC Category Mapping
V28HCC 20 — Lung and Other Severe Cancers
0.000V24HCC 9 — Lung and Other Severe Cancers
0.973ESRDHCC 9 — Lung and Other Severe Cancers
0.000RxHCCHCC 20 — Cancer, Liver and Intrahepatic Bile Duct
0.000What This Code Means
Cancer that involves multiple areas of the lung and/or bronchus, but the specific side is not identified.
Coding Tips
Clinical Significance
This code represents lung cancer involving multiple anatomical sites within the lung or bronchus without specified laterality. Overlapping site tumors often indicate locally advanced disease that crosses lobar or anatomical boundaries. The lack of laterality is a documentation gap requiring provider query.
Documentation Requirements
- ✓Imaging showing tumor involvement of multiple lung regions
- ✓Pathology confirming the tumor is a single primary crossing anatomical boundaries
- ✓Evidence that laterality cannot be determined
- ✓TNM staging reflecting multi-site involvement
- ✓Provider query for laterality
Commonly Confused Codes
C34.81/C34.82 — Right/left overlapping sites: Always assign laterality when documentedC34.90 — Lung, unspecified: C34.80 is more specific, indicating overlapping sitesC78.00 — Secondary malignant neoplasm of lung: Ensure overlapping sites are from a single primary, not metastatic depositsC34.10-C34.32 — Single lobe codes: Use when the primary tumor is in one lobe with only minor extension
Code Hierarchy
└C34Malignant neoplasm of bronchus and lung└C34.8Malignant neoplasm of overlapping sites of bronchus and lung└C34.80Malignant neoplasm of overlapping sites of unspecified bronchus and lung
└C34.80Malignant neoplasm of overlapping sites of unspecified bronchus and lung