| 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 |
