C22.0
BillableLiver cell carcinoma
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
Hepatocellular carcinoma, the most common type of primary liver cancer that develops from the main liver cells. It typically occurs in people with chronic liver disease or cirrhosis.
Coding Tips
- •Document whether this is associated with hepatitis B, hepatitis C, cirrhosis, or other risk factors
- •Distinguish from intrahepatic bile duct carcinoma (C22.1) and other liver malignancies
Clinical Significance
Hepatocellular carcinoma is the most common type of primary liver cancer and the sixth most common cancer worldwide. It predominantly occurs in patients with underlying chronic liver disease, including hepatitis B, hepatitis C, alcoholic liver disease, and nonalcoholic steatohepatitis-related cirrhosis. This diagnosis carries a high risk adjustment weight because patients require complex, multidisciplinary care including potential liver transplantation, locoregional therapies, and systemic immunotherapy.
Documentation Requirements
- ✓Pathological or clinical confirmation of hepatocellular carcinoma (not just liver mass)
- ✓Underlying liver disease etiology (hepatitis B, hepatitis C, alcoholic cirrhosis, nonalcoholic steatohepatitis)
- ✓Stage of disease (Barcelona Clinic Liver Cancer staging, TNM, or both)
- ✓Liver function assessment (Child-Pugh score, Model for End-Stage Liver Disease score)
- ✓Treatment approach (resection, transplant, ablation, transarterial chemoembolization, systemic therapy)
Commonly Confused Codes
C22.1 — Intrahepatic bile duct carcinoma (cholangiocarcinoma): different cell origin; hepatocellular carcinoma arises from hepatocytes, cholangiocarcinoma from bile duct cellsC78.7 — Secondary malignant neoplasm of liver: metastatic cancer TO the liver from another primary site; critical distinctionC22.8 — Primary liver cancer, unspecified type: use C22.0 when hepatocellular carcinoma is confirmedC22.9 — Liver cancer, not specified as primary or secondary: use C22.0 when primary hepatocellular carcinoma is confirmed
Code Hierarchy
└C22Malignant neoplasm of liver and intrahepatic bile ducts└C22.0Liver cell carcinoma
└C22.0Liver cell carcinoma