| O41.1290 | Chorioamnionitis, unspecified trimester, not applicable or unspecified | BILLABLE CODE |
| O41.1291 | Chorioamnionitis, unspecified trimester, fetus 1 | BILLABLE CODE |
| O41.1292 | Chorioamnionitis, unspecified trimester, fetus 2 | BILLABLE CODE |
| O41.1293 | Chorioamnionitis, unspecified trimester, fetus 3 | BILLABLE CODE |
| O41.1294 | Chorioamnionitis, unspecified trimester, fetus 4 | BILLABLE CODE |
| O41.1295 | Chorioamnionitis, unspecified trimester, fetus 5 | BILLABLE CODE |
| O41.1299 | Chorioamnionitis, unspecified trimester, other fetus | BILLABLE CODE |
