C34.32
BillableMalignant neoplasm of lower lobe, left bronchus or 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 starts in the lower portion of the left lung or left main bronchus.
Coding Tips
- •Ensure documentation clearly indicates left lower lobe location before coding
- •Review pathology and imaging reports to confirm the exact anatomical location of the tumor
Clinical Significance
Left lower lobe lung cancer may involve the descending aorta, esophagus, or left hemidiaphragm. The left lower lobe is bordered by the oblique fissure separating it from the upper lobe. Surgical resection on the left requires careful dissection around the aortic arch and its branches, making anatomical accuracy in coding clinically relevant.
Documentation Requirements
- ✓Pathology with histological type and molecular markers
- ✓Imaging confirming left lower lobe location
- ✓Assessment of involvement of adjacent structures (aorta, esophagus, diaphragm)
- ✓TNM staging
- ✓Surgical candidacy evaluation
Commonly Confused Codes
Code Hierarchy
└C34Malignant neoplasm of bronchus and lung└C34.3Malignant neoplasm of lower lobe, bronchus or lung└C34.32Malignant neoplasm of lower lobe, left bronchus or lung
└C34.32Malignant neoplasm of lower lobe, left bronchus or lung