| O418X99 | Oth disrd of amniotic fluid and membrns, unsp trimester, oth Other specified disorders of amniotic fluid and membranes, unspecified trimester, other fetus |
| O419 | Disorder of amniotic fluid and membranes, unspecified |
| O4190 | Disorder of amniotic fluid and membrns, unsp, unsp trimester Disorder of amniotic fluid and membranes, unspecified, unspecified trimester |
| O4190X0 | Disorder of amniotic fluid and membrns, unsp, unsp tri, unsp Disorder of amniotic fluid and membranes, unspecified, unspecified trimester, not applicable or unspecified |
| O4190X1 | Disorder of amnio fluid and membrns, unsp, unsp tri, fetus 1 Disorder of amniotic fluid and membranes, unspecified, unspecified trimester, fetus 1 |
| O4190X2 | Disorder of amnio fluid and membrns, unsp, unsp tri, fetus 2 Disorder of amniotic fluid and membranes, unspecified, unspecified trimester, fetus 2 |
| O4190X3 | Disorder of amnio fluid and membrns, unsp, unsp tri, fetus 3 Disorder of amniotic fluid and membranes, unspecified, unspecified trimester, fetus 3 |
| O4190X4 | Disorder of amnio fluid and membrns, unsp, unsp tri, fetus 4 Disorder of amniotic fluid and membranes, unspecified, unspecified trimester, fetus 4 |
| O4190X5 | Disorder of amnio fluid and membrns, unsp, unsp tri, fetus 5 Disorder of amniotic fluid and membranes, unspecified, unspecified trimester, fetus 5 |
| O4190X9 | Disorder of amniotic fluid and membranes, unspecified, unspecified trimester, other fetus |
| O4191 | Disorder of amniotic fluid and membranes, unspecified, first trimester |
| O4191X0 | Disorder of amniotic fluid and membranes, unspecified, first trimester, not applicable or unspecified |
| O4191X1 | Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 1 |
| O4191X2 | Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 2 |
| O4191X3 | Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 3 |
| O4191X4 | Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 4 |
| O4191X5 | Disorder of amniotic fluid and membranes, unspecified, first trimester, fetus 5 |
| O4191X9 | Disorder of amniotic fluid and membrns, unsp, first tri, oth Disorder of amniotic fluid and membranes, unspecified, first trimester, other fetus |
| O4192 | Disorder of amniotic fluid and membranes, unspecified, second trimester |
| O4192X0 | Disorder of amniotic fluid and membranes, unspecified, second trimester, not applicable or unspecified |
| O4192X1 | Disord of amnio fluid and membrns, unsp, second tri, fetus 1 Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 1 |
| O4192X2 | Disord of amnio fluid and membrns, unsp, second tri, fetus 2 Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 2 |
| O4192X3 | Disord of amnio fluid and membrns, unsp, second tri, fetus 3 Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 3 |
| O4192X4 | Disord of amnio fluid and membrns, unsp, second tri, fetus 4 Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 4 |
| O4192X5 | Disord of amnio fluid and membrns, unsp, second tri, fetus 5 Disorder of amniotic fluid and membranes, unspecified, second trimester, fetus 5 |
| O4192X9 | Disorder of amniotic fluid and membranes, unspecified, second trimester, other fetus |
| O4193 | Disorder of amniotic fluid and membranes, unspecified, third trimester |
| O4193X0 | Disorder of amniotic fluid and membranes, unspecified, third trimester, not applicable or unspecified |
| O4193X1 | Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 1 |
| O4193X2 | Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 2 |
| O4193X3 | Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 3 |
| O4193X4 | Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 4 |
| O4193X5 | Disorder of amniotic fluid and membranes, unspecified, third trimester, fetus 5 |
| O4193X9 | Disorder of amniotic fluid and membrns, unsp, third tri, oth Disorder of amniotic fluid and membranes, unspecified, third trimester, other fetus |
| O42 | Premature rupture of membranes |
| O420 | Premature rupture of membranes, onset of labor within 24 hours of rupture |
| O4200 | Premature rupture of membranes, onset of labor within 24 hours of rupture, unspecified weeks of gestation |
| O4201 | Preterm premature rupture of membranes, onset of labor within 24 hours of rupture |
| O42011 | Pretrm prem ROM, onset labor w/n 24 hours of rupt, first tri Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, first trimester |
| O42012 | Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, second trimester |
| O42013 | Pretrm prem ROM, onset labor w/n 24 hours of rupt, third tri Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, third trimester |
| O42019 | Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, unspecified trimester |
| O4202 | Full-term premature rupture of membranes, onset of labor within 24 hours of rupture |
| O421 | Premature rupture of membranes, onset of labor more than 24 hours following rupture |
| O4210 | Premature rupture of membranes, onset of labor more than 24 hours following rupture, unspecified weeks of gestation |
| O4211 | Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture |
| O42111 | Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, first trimester |
| O42112 | Pretrm prem ROM, onset labor > 24 hours fol rupt, second tri Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, second trimester |
| O42113 | Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, third trimester |
| O42119 | Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, unspecified trimester |