| B18 | Chronic viral hepatitis | NON-BILLABLE CODE |
| B18.1 | Chronic viral hepatitis B without delta-agent | BILLABLE CODE |
| B18.2 | Chronic viral hepatitis C | BILLABLE CODE |
| B18.8 | Other chronic viral hepatitis | BILLABLE CODE |
| B18.9 | Chronic viral hepatitis, unspecified | BILLABLE CODE |
