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v1.0.0
ICD-10 Guide
ICD-10 CodesB18.9

B18.9

Chronic viral hepatitis, unspecified

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

Code Description

ICD-10 B18.9 is a billable code used to indicate a diagnosis of chronic viral hepatitis, unspecified.

Key Diagnostic Point:

Chronic viral hepatitis is a long-term infection of the liver caused by various viruses, primarily hepatitis B and C. This condition can lead to significant liver damage, cirrhosis, and liver cancer over time. Patients may remain asymptomatic for years, making early detection challenging. Chronic hepatitis is characterized by the presence of viral antigens or RNA in the blood for more than six months. Transmission routes include blood-to-blood contact, sexual contact, and from mother to child during childbirth. Management of chronic viral hepatitis involves regular monitoring of liver function, antiviral therapy, and lifestyle modifications to reduce liver strain. Patients are advised to avoid alcohol and certain medications that can exacerbate liver damage. Complications may include liver fibrosis, cirrhosis, and hepatocellular carcinoma, necessitating ongoing surveillance and potential interventions.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in clinical presentation and symptoms
  • Need for differentiation between hepatitis types (A, B, C, D, E)
  • Potential for co-infection with other viruses (e.g., HIV)
  • Long-term management and monitoring requirements

Audit Risk Factors

  • Inadequate documentation of chronicity
  • Failure to specify the type of hepatitis
  • Lack of supporting lab results
  • Inconsistent patient history regarding risk factors

Specialty Focus

Medical Specialties

Gastroenterology

Documentation Requirements

Detailed liver function tests, imaging studies, and patient history of hepatitis exposure.

Common Clinical Scenarios

Patients presenting with elevated liver enzymes, jaundice, or complications from cirrhosis.

Billing Considerations

Ensure documentation reflects the chronic nature and any complications or co-morbidities.

Infectious Disease

Documentation Requirements

History of viral hepatitis exposure, serological testing results, and treatment plans.

Common Clinical Scenarios

Patients with chronic hepatitis undergoing antiviral therapy or monitoring for liver cancer.

Billing Considerations

Document any co-infections and the patient's response to treatment.

Coding Guidelines

Inclusion Criteria

Use B18.9 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the chronicity of the condition is well
  • documented
  • Include any relevant lab results and imaging studies that support the diagnosis

Exclusion Criteria

Do NOT use B18.9 When
  • Exclude acute hepatitis codes unless specified

Related CPT Codes

86803CPT Code

Hepatitis B surface antigen (HBsAg)

Clinical Scenario

Used for screening and diagnosis of hepatitis B in patients with chronic hepatitis.

Documentation Requirements

Document the reason for testing and any previous results.

Specialty Considerations

Gastroenterology may require additional liver function tests.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of chronic viral hepatitis, improving data accuracy and treatment tracking. B18.9 serves as a catch-all for unspecified cases, but coders must ensure proper documentation to avoid ambiguity.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of chronic viral hepatitis, improving data accuracy and treatment tracking. B18.9 serves as a catch-all for unspecified cases, but coders must ensure proper documentation to avoid ambiguity.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of chronic viral hepatitis, improving data accuracy and treatment tracking. B18.9 serves as a catch-all for unspecified cases, but coders must ensure proper documentation to avoid ambiguity.

Resources

Clinical References

  • •
    CDC Viral Hepatitis Resources

Coding & Billing References

  • •
    CDC Viral Hepatitis Resources

Frequently Asked Questions

What is the difference between chronic and acute viral hepatitis?

Chronic viral hepatitis is defined by the presence of the virus in the blood for more than six months, while acute viral hepatitis is a short-term illness that typically resolves within six months.