ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesChapter 2: NeoplasmsC22

C22

Billable

Malignant neoplasm of liver and intrahepatic bile ducts

Chapter 2:Neoplasms

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 C22 is a billable code used to indicate a diagnosis of malignant neoplasm of liver and intrahepatic bile ducts.

Key Diagnostic Point:

Malignant neoplasm of the liver and intrahepatic bile ducts encompasses a variety of liver cancers, including hepatocellular carcinoma (HCC) and cholangiocarcinoma. These malignancies often arise in the context of chronic liver disease, particularly cirrhosis, which can be caused by hepatitis B or C infections, alcohol abuse, or non-alcoholic fatty liver disease. The presence of cirrhosis significantly increases the risk of developing liver cancer, as the regenerative nodules can undergo malignant transformation. Alpha-fetoprotein (AFP) levels are commonly monitored in patients at risk for HCC, as elevated levels can indicate the presence of liver cancer, although not all cases will present with elevated AFP. Liver transplantation is a potential curative treatment for eligible patients with early-stage liver cancer, but strict criteria must be met, including tumor size and number, as well as the absence of extrahepatic disease. The management of liver cancer requires a multidisciplinary approach, including oncologists, hepatologists, and transplant surgeons, to optimize patient outcomes.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Differentiation between primary and secondary liver cancers
  • Association with cirrhosis and chronic liver disease
  • Monitoring and interpretation of AFP levels
  • Criteria for liver transplantation eligibility

Audit Risk Factors

  • Inaccurate staging of the cancer
  • Failure to document cirrhosis or chronic liver disease
  • Misinterpretation of AFP levels
  • Inadequate documentation of treatment plans

Specialty Focus

Medical Specialties

Hepatology

Documentation Requirements

Detailed history of liver disease, imaging results, and laboratory findings including AFP levels.

Common Clinical Scenarios

Patients presenting with elevated liver enzymes, jaundice, or abdominal pain; routine surveillance in cirrhotic patients.

Billing Considerations

Ensure documentation reflects the relationship between cirrhosis and the development of liver cancer.

Oncology

Documentation Requirements

Pathology reports confirming malignancy, staging information, and treatment plans.

Common Clinical Scenarios

Patients undergoing chemotherapy, targeted therapy, or preparing for liver transplantation.

Billing Considerations

Accurate staging and documentation of treatment response are critical for coding.

Coding Guidelines

Inclusion Criteria

Use C22 When
  • According to the official coding guidelines, C22 should be used when the diagnosis of malignant neoplasm of the liver is confirmed through imaging or biopsy
  • It is important to document the specific type of liver cancer and any associated conditions such as cirrhosis

Exclusion Criteria

Do NOT use C22 When
  • Exclusion criteria include benign liver tumors and metastatic disease from other primary sites

Related CPT Codes

47133CPT Code

Liver transplantation

Clinical Scenario

Used for patients with early-stage liver cancer meeting transplant criteria.

Documentation Requirements

Document eligibility criteria, tumor size, and number.

Specialty Considerations

Involves coordination between hepatology and transplant surgery.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of liver cancers, improving the accuracy of data collection and reimbursement processes. It has also enhanced the ability to track outcomes and treatment effectiveness.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of liver cancers, improving the accuracy of data collection and reimbursement processes. It has also enhanced the ability to track outcomes and treatment effectiveness.

Reimbursement & Billing Impact

reimbursement processes. It has also enhanced the ability to track outcomes and treatment effectiveness.

Resources

Clinical References

  • •
    American Cancer Society - Liver Cancer

Coding & Billing References

  • •
    American Cancer Society - Liver Cancer

Frequently Asked Questions

What is the significance of elevated AFP levels in liver cancer?

Elevated AFP levels can indicate the presence of hepatocellular carcinoma, especially in patients with cirrhosis or chronic liver disease. However, not all patients with HCC will have elevated AFP, so it should be used in conjunction with imaging and clinical findings.