Pretrm prem ROM, onset labor w/n 24 hours of rupt, third tri

This code signifies the premature rupture of the amniotic sac (water breaking) before 37 weeks of gestation, specifically when labor commences within 24 hours of this rupture. It indicates a third-trimester occurrence of preterm premature rupture of membranes (PPROM) with a rapid progression to active labor.

Use this code when documentation clearly states PPROM occurring in the third trimester, followed by the onset of labor within 24 hours of the membrane rupture. This applies to cases where the patient presents with ruptured membranes and subsequently enters labor shortly thereafter, prior to term.

• Ensure documentation specifies "third trimester" and "onset of labor within 24 hours of rupture."
• Do not use if labor onset is greater than 24 hours after rupture; a different O42 subcategory would apply.
• Sequence this code as the principal diagnosis when it is the reason for the encounter.