O42.912 - Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, second trimester
O42.9 - Premature rupture of membranes, unspecified as to length of time between rupture and onset of labor O42.91 - Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor O42.912 - Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, second trimester