| O3089 | Other specified multiple gestation, unable to determine number of placenta and number of amniotic sacs |
| O30891 | Oth mult gest, unab to dtrm num plcnta & amnio sacs, 1st tri Other specified multiple gestation, unable to determine number of placenta and number of amniotic sacs, first trimester |
| O30892 | Oth mult gest, unab to dtrm num plcnta & amnio sacs, 2nd tri Other specified multiple gestation, unable to determine number of placenta and number of amniotic sacs, second trimester |
| O30893 | Oth mult gest, unab to dtrm num plcnta & amnio sacs, 3rd tri Other specified multiple gestation, unable to determine number of placenta and number of amniotic sacs, third trimester |
| O30899 | Oth mult gest,unab to dtrm num plcnta & amnio sacs, unsp tri Other specified multiple gestation, unable to determine number of placenta and number of amniotic sacs, unspecified trimester |
| O309 | Multiple gestation, unspecified |
| O3090 | Multiple gestation, unspecified, unspecified trimester |
| O3091 | Multiple gestation, unspecified, first trimester |
| O3092 | Multiple gestation, unspecified, second trimester |
| O3093 | Multiple gestation, unspecified, third trimester |
| O31 | Complications specific to multiple gestation |
| O310 | Papyraceous fetus |
| O3100 | Papyraceous fetus, unspecified trimester |
| O3100X0 | Papyraceous fetus, unspecified trimester, not applicable or unspecified |
| O3100X1 | Papyraceous fetus, unspecified trimester, fetus 1 |
| O3100X2 | Papyraceous fetus, unspecified trimester, fetus 2 |
| O3100X3 | Papyraceous fetus, unspecified trimester, fetus 3 |
| O3100X4 | Papyraceous fetus, unspecified trimester, fetus 4 |
| O3100X5 | Papyraceous fetus, unspecified trimester, fetus 5 |
| O3100X9 | Papyraceous fetus, unspecified trimester, other fetus |
| O3101 | Papyraceous fetus, first trimester |
| O3101X0 | Papyraceous fetus, first trimester, not applicable or unspecified |
| O3101X1 | Papyraceous fetus, first trimester, fetus 1 |
| O3101X2 | Papyraceous fetus, first trimester, fetus 2 |
| O3101X3 | Papyraceous fetus, first trimester, fetus 3 |
| O3101X4 | Papyraceous fetus, first trimester, fetus 4 |
| O3101X5 | Papyraceous fetus, first trimester, fetus 5 |
| O3101X9 | Papyraceous fetus, first trimester, other fetus |
| O3102 | Papyraceous fetus, second trimester |
| O3102X0 | Papyraceous fetus, second trimester, not applicable or unspecified |
| O3102X1 | Papyraceous fetus, second trimester, fetus 1 |
| O3102X2 | Papyraceous fetus, second trimester, fetus 2 |
| O3102X3 | Papyraceous fetus, second trimester, fetus 3 |
| O3102X4 | Papyraceous fetus, second trimester, fetus 4 |
| O3102X5 | Papyraceous fetus, second trimester, fetus 5 |
| O3102X9 | Papyraceous fetus, second trimester, other fetus |
| O3103 | Papyraceous fetus, third trimester |
| O3103X0 | Papyraceous fetus, third trimester, not applicable or unspecified |
| O3103X1 | Papyraceous fetus, third trimester, fetus 1 |
| O3103X2 | Papyraceous fetus, third trimester, fetus 2 |
| O3103X3 | Papyraceous fetus, third trimester, fetus 3 |
| O3103X4 | Papyraceous fetus, third trimester, fetus 4 |
| O3103X5 | Papyraceous fetus, third trimester, fetus 5 |
| O3103X9 | Papyraceous fetus, third trimester, other fetus |
| O311 | Continuing pregnancy after spontaneous abortion of one fetus or more |
| O3110 | Cont preg after spon abortion of one fetus or more, unsp tri Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester |
| O3110X0 | Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, not applicable or unspecified |
| O3110X1 | Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, fetus 1 |
| O3110X2 | Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, fetus 2 |
| O3110X3 | Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, fetus 3 |