B18: Chronic viral hepatitis
Codes under B18 (Chronic viral hepatitis). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| B18.0 | Chronic viral hepatitis B with delta-agent | ✓ |
| B18.0 | Chronic viral hepatitis B with delta-agent | ✓ |
| B18.1 | Chronic viral hepatitis B without delta-agent | ✓ |
| B18.1 | Chronic viral hepatitis B without delta-agent | ✓ |
| B18.2 | Chronic viral hepatitis C | ✓ |
| B18.2 | Chronic viral hepatitis C | ✓ |
| B18.8 | Other chronic viral hepatitis | ✓ |
| B18.8 | Other chronic viral hepatitis | ✓ |
| B18.9 | Chronic viral hepatitis, unspecified | ✓ |
| B18.9 | Chronic viral hepatitis, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code B18?
B18 is an ICD-10-CM category covering Chronic viral hepatitis. It contains 10 more specific diagnosis codes, 10 of which are billable.
Is B18 a billable code?
No — B18 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example B18.0 — Chronic viral hepatitis B with delta-agent). 10 of the 10 codes under B18 are billable.
What codes fall under B18?
B18 includes B18.0, B18.0, B18.1, B18.1, B18.2, plus 5 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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