Pretrm prem ROM, onset labor > 24 hours fol rupt, first tri

This code signifies the premature rupture of the amniotic sac (water breaking) before 37 weeks of gestation, specifically when the onset of labor occurs more than 24 hours after the rupture. This condition occurs during the first trimester of pregnancy, posing significant risks to both mother and fetus.

Apply this code when documentation clearly indicates preterm premature rupture of membranes (PPROM) in the first trimester, followed by a latent period exceeding 24 hours before the initiation of labor. Supporting documentation should specify the gestational age at rupture, the time of rupture, and the time of labor onset.

• Ensure the documentation explicitly states "first trimester" for accurate code assignment.
• Distinguish from PPROM with labor onset within 24 hours (O42.12-) or without labor (O42.10-).
• Always sequence this code as a primary diagnosis when it is the reason for the encounter.