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    v1.0.28
    OpenPayerBilling CodesViral hepatitisICD-10-CM b18-chronic-viral-hepatitis
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    ICD-10-CM Code For Chronic Viral Hepatitis: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group B18 includes chronic viral hepatitis diagnoses such as chronic hepatitis B, chronic hepatitis C, and other chronic viral hepatitis types, covering ongoing viral infections of the liver and their chronic sequelae. These ICD-10-CM diagnosis codes are used to document persistent viral liver infection, disease chronicity, and related complications such as fibrosis or cirrhosis, capturing disease severity and organ involvement. Accurate coding within the ICD-10-CM B18 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM B18: Chronic Viral Hepatitis Overview

    The ICD-10-CM B18 diagnoses represent chronic viral hepatitis infections that primarily affect the liver and can lead to long-term hepatic inflammation, fibrosis, and cirrhosis. These codes capture ongoing viral hepatitis due to specific viruses and are used across inpatient and outpatient settings. Accurate coding matters for reimbursement because it reflects disease chronicity, guides longitudinal care documentation, and supports appropriate claim adjudication.

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    When to Use

    Use a code from this group when a patient has a documented chronic viral hepatitis infection confirmed by clinical evaluation or laboratory testing and the clinician documents chronicity. Select the specific code that corresponds to the identified virus and any documented complications such as cirrhosis or hepatic failure.

    ICD-10-CM Codes

    5 rows

    ICD-10-CM CodeDescription
    B18.0Chronic viral hepatitis B with delta-agent
    B18.1Chronic viral hepatitis B without delta-agent
    B18.2Chronic viral hepatitis C
    B18.8Other chronic viral hepatitis
    B18.9Chronic viral hepatitis, unspecified

    DRG Codes

    5 rows

    DRG CodeDescription
    441Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with MCC
    442Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with CC
    443Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis without CC/MCC
    791Prematurity with Major Problems
    793Full Term Neonate with Major Problems

    Typical Clinical Scenarios

    • A 48-year-old patient with known chronic hepatitis B infection presents for routine hepatology follow-up with stable ALT and AST but persistent detectable HBsAg and low-level viremia on viral load testing. No signs of acute hepatic inflammation or hepatic failure are present, and the encounter documents ongoing chronic viral infection requiring monitoring and possible antiviral management. Typical codes: B18.1
    • A 55-year-old patient with a history of alcohol use disorder and prior hepatitis B infection is admitted for new-onset jaundice, encephalopathy, and coagulopathy; viral testing demonstrates chronic hepatitis B with evidence of progressive liver dysfunction and cirrhosis-related complications. The visit focuses on chronic viral hepatitis as a contributor to the patient’s decompensated liver disease and need for inpatient management. Typical codes: B18.1, B18.2
    • A 32-year-old pregnant patient is identified during prenatal screening with positive hepatitis C RNA but no acute symptoms; care is coordinated for monitoring, counseling, and planning postpartum treatment to prevent vertical transmission. The record documents chronic hepatitis C infection detected on screening and informs obstetric care and delivery planning. Typical codes: B18.2

    Related Codes

    B15-ACUTE-HEPATITIS-A

    ICD-10-CM Code For Acute Hepatitis A: Group Overview

    B16-ACUTE-HEPATITIS-B

    ICD-10-CM Code For Acute Hepatitis B: Group Overview

    B17-OTHER-ACUTE-VIRAL-HEPATITIS

    ICD-10-CM Code For Other Acute Viral Hepatitis: Group Overview

    B19-UNSPECIFIED-VIRAL-HEPATITIS

    ICD-10-CM Code For Unspecified Viral Hepatitis: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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