| B97 | Viral agents as the cause of diseases classified elsewhere | NON-BILLABLE CODE |
| B97.0 | Adenovirus as the cause of diseases classified elsewhere | BILLABLE CODE |
| B97.1 | Enterovirus as the cause of diseases classified elsewhere | NON-BILLABLE CODE |
| B97.10 | Unspecified enterovirus as the cause of diseases classified elsewhere | BILLABLE CODE |
| B97.12 | Echovirus as the cause of diseases classified elsewhere | BILLABLE CODE |
| B97.19 | Other enterovirus as the cause of diseases classified elsewhere | BILLABLE CODE |
| B97.2 | Coronavirus as the cause of diseases classified elsewhere | NON-BILLABLE CODE |
| B97.21 | SARS-associated coronavirus as the cause of diseases classified elsewhere | BILLABLE CODE |
| B97.29 | Other coronavirus as the cause of diseases classified elsewhere | BILLABLE CODE |
| B97.3 | Retrovirus as the cause of diseases classified elsewhere | NON-BILLABLE CODE |
| B97.30 | Unspecified retrovirus as the cause of diseases classified elsewhere | BILLABLE CODE |
| B97.31 | Lentivirus as the cause of diseases classified elsewhere | BILLABLE CODE |
| B97.32 | Oncovirus as the cause of diseases classified elsewhere | BILLABLE CODE |
| B97.33 | Human T-cell lymphotrophic virus, type I [HTLV-I] as the cause of diseases classified elsewhere | BILLABLE CODE |
| B97.34 | Human T-cell lymphotrophic virus, type II [HTLV-II] as the cause of diseases classified elsewhere | BILLABLE CODE |
| B97.35 | Human immunodeficiency virus, type 2 [HIV 2] as the cause of diseases classified elsewhere | BILLABLE CODE |
| B97.39 | Other retrovirus as the cause of diseases classified elsewhere | BILLABLE CODE |
| B97.4 | Respiratory syncytial virus as the cause of diseases classified elsewhere | BILLABLE CODE |
| B97.5 | Reovirus as the cause of diseases classified elsewhere | BILLABLE CODE |
| B97.6 | Parvovirus as the cause of diseases classified elsewhere | BILLABLE CODE |
| B97.7 | Papillomavirus as the cause of diseases classified elsewhere | BILLABLE CODE |
| B97.8 | Other viral agents as the cause of diseases classified elsewhere | NON-BILLABLE CODE |
| B97.81 | Human metapneumovirus as the cause of diseases classified elsewhere | BILLABLE CODE |
| B97.89 | Other viral agents as the cause of diseases classified elsewhere | BILLABLE CODE |
