| O411099 | Infct of amniotic sac and membrns, unsp, unsp trimester, oth Infection of amniotic sac and membranes, unspecified, unspecified trimester, other fetus |
| O4112 | Chorioamnionitis |
| O41121 | Chorioamnionitis, first trimester |
| O411210 | Chorioamnionitis, first trimester, not applicable or unspecified |
| O411211 | Chorioamnionitis, first trimester, fetus 1 |
| O411212 | Chorioamnionitis, first trimester, fetus 2 |
| O411213 | Chorioamnionitis, first trimester, fetus 3 |
| O411214 | Chorioamnionitis, first trimester, fetus 4 |
| O411215 | Chorioamnionitis, first trimester, fetus 5 |
| O411219 | Chorioamnionitis, first trimester, other fetus |
| O41122 | Chorioamnionitis, second trimester |
| O411220 | Chorioamnionitis, second trimester, not applicable or unspecified |
| O411221 | Chorioamnionitis, second trimester, fetus 1 |
| O411222 | Chorioamnionitis, second trimester, fetus 2 |
| O411223 | Chorioamnionitis, second trimester, fetus 3 |
| O411224 | Chorioamnionitis, second trimester, fetus 4 |
| O411225 | Chorioamnionitis, second trimester, fetus 5 |
| O411229 | Chorioamnionitis, second trimester, other fetus |
| O41123 | Chorioamnionitis, third trimester |
| O411230 | Chorioamnionitis, third trimester, not applicable or unspecified |
| O411231 | Chorioamnionitis, third trimester, fetus 1 |
| O411232 | Chorioamnionitis, third trimester, fetus 2 |
| O411233 | Chorioamnionitis, third trimester, fetus 3 |
| O411234 | Chorioamnionitis, third trimester, fetus 4 |
| O411235 | Chorioamnionitis, third trimester, fetus 5 |
| O411239 | Chorioamnionitis, third trimester, other fetus |
| O41129 | Chorioamnionitis, unspecified trimester |
| O411290 | Chorioamnionitis, unspecified trimester, not applicable or unspecified |
| O411291 | Chorioamnionitis, unspecified trimester, fetus 1 |
| O411292 | Chorioamnionitis, unspecified trimester, fetus 2 |
| O411293 | Chorioamnionitis, unspecified trimester, fetus 3 |
| O411294 | Chorioamnionitis, unspecified trimester, fetus 4 |
| O411295 | Chorioamnionitis, unspecified trimester, fetus 5 |
| O411299 | Chorioamnionitis, unspecified trimester, other fetus |
| O4114 | Placentitis |
| O41141 | Placentitis, first trimester |
| O411410 | Placentitis, first trimester, not applicable or unspecified |
| O411411 | Placentitis, first trimester, fetus 1 |
| O411412 | Placentitis, first trimester, fetus 2 |
| O411413 | Placentitis, first trimester, fetus 3 |
| O411414 | Placentitis, first trimester, fetus 4 |
| O411415 | Placentitis, first trimester, fetus 5 |
| O411419 | Placentitis, first trimester, other fetus |
| O41142 | Placentitis, second trimester |
| O411420 | Placentitis, second trimester, not applicable or unspecified Placentitis, second trimester, not applicable or unspecified |
| O411421 | Placentitis, second trimester, fetus 1 |
| O411422 | Placentitis, second trimester, fetus 2 |
| O411423 | Placentitis, second trimester, fetus 3 |
| O411424 | Placentitis, second trimester, fetus 4 |
| O411425 | Placentitis, second trimester, fetus 5 |