Pretrm prem ROM, unsp time betw rupt and onst labr, unsp tri

This code describes the spontaneous rupture of the amniotic sac before 37 weeks of gestation, where the time elapsed between the rupture and the start of labor is not documented. It indicates that the specific trimester of pregnancy at the time of rupture is also unknown. This condition increases the risk of infection and preterm birth.

Use this code when documentation clearly states preterm premature rupture of membranes (PPROM) but does not specify the interval to labor onset or the trimester. This often occurs when the patient presents with PPROM and the exact timing or gestational age at rupture is not precisely recorded or is undetermined at the time of coding.

• Avoid using this code if the time interval between rupture and labor onset is documented (e.g., less than 24 hours, 24 hours or more).
• Do not use if the specific trimester is known and documented; instead, select a more specific O42.9x- code.
• Always sequence this code as a principal diagnosis when it is the reason for the encounter, followed by codes for any associated complications.