ICD-10 B18
Non-Billable HeaderChronic viral hepatitis
About ICD-10-CM B18
ICD-10-CM code B18 represents Chronic viral hepatitis. This is a non-billable header code in the Infectious and Parasitic Diseases chapter (block B18). The 2026 edition of ICD-10-CM B18 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Includes
- Carrier of viral hepatitis
Use Additional Code
When coding B18, also report these additional codes when applicable.
- code, if applicable, for ascites (R18.8)
Medicare LCD Coverage for B18
Local Coverage Determinations (LCDs) from CMS MACs that list B18 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing B18.
2 Cigna
CPT Codes Commonly Billed with B18
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To B18
Other codes in section B15-B19 (Viral hepatitis).
ICD-10 B18, Billing FAQ
Is ICD-10 code B18 billable? +
No, B18 is a non-billable header code. Use a more specific child code from block B18 when submitting claims.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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