| O42.00 | Premature rupture of membranes, onset of labor within 24 hours of rupture, unspecified weeks of gestation | BILLABLE CODE |
| O42.01 | Preterm premature rupture of membranes, onset of labor within 24 hours of rupture | NON-BILLABLE CODE |
| O42.011 | Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, first trimester | BILLABLE CODE |
| O42.012 | Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, second trimester | BILLABLE CODE |
| O42.013 | Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, third trimester | BILLABLE CODE |
| O42.019 | Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, unspecified trimester | BILLABLE CODE |
| O42.02 | Full-term premature rupture of membranes, onset of labor within 24 hours of rupture | BILLABLE CODE |
