Pretrm prem ROM, unsp time betw rupt and onst labr, 3rd tri

This code signifies the spontaneous rupture of the amniotic sac before the onset of labor, occurring in the third trimester of pregnancy, where the exact time interval between the rupture and the start of labor is not documented. It indicates a premature rupture of membranes (PROM) specifically within the third trimester, without further specification of the latency period.

Use this code when documentation confirms preterm premature rupture of membranes (PPROM) in the third trimester (28 weeks 0 days gestation through 40 weeks 6 days gestation) and the medical record does not specify the duration between the membrane rupture and the commencement of labor. This code is appropriate when the physician's notes indicate "PPROM, third trimester, duration unspecified."

• Ensure the documentation explicitly states "third trimester" and "unspecified" regarding the latency period.
• Distinguish from O42.1- (preterm premature rupture of membranes, onset of labor within 24 hours) or O42.2- (preterm premature rupture of membranes, onset of labor more than 24 hours after rupture).
• Always sequence this code as a secondary diagnosis following the primary code for the outcome of delivery, if applicable, or as the primary diagnosis if the patient is still pregnant and being managed for PPROM.