Chronic viral hepatitis (B18) ICD-10-CM
The B18 code range covers chronic viral hepatitis with 6 ICD-10-CM diagnosis codes. 5 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- Carrier of viral hepatitis
Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
- code, if applicable, for ascites R18.8
Codes in the B18 Range 6 codes · 5 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the B18 range.
Chronic Viral Hepatitis
Chronic hepatitis caused by viruses, most commonly hepatitis viruses B and C.
Chronic Viral Hepatitis C
Persistent and long-standing hepatitis C infection. Presenting signs and symptoms may be mild but severe findings likely indicate progression to advanced disease including cirrhosis and liver cancer.
About the B18 Code Range
Chronic viral hepatitis is long-lasting hepatitis caused by viruses, most commonly hepatitis B or C.
The subdivisions separate hepatitis B by whether a delta-agent, also called hepatitis D, is present: B18.0 has it, and B18.1 does not. B18.2 identifies hepatitis C. Other chronic viral hepatitis falls under B18.8, while B18.9 is unspecified chronic viral hepatitis.
Questions About This Page
How many billable codes are in the B18 range?
Of the 6 codes in this range, 5 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the B18 range classify?
The range classifies chronic viral hepatitis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
