Preterm labor third tri w preterm delivery third tri, oth

This code signifies the occurrence of labor contractions leading to cervical changes and subsequent delivery during the third trimester (28 weeks 0 days to 40 weeks 6 days gestation) for a multifetal pregnancy, specifically when referring to an "other fetus" (not the first or specified fetus). It indicates that the delivery itself also occurred prematurely within the third trimester.

Apply this code when documentation clearly states preterm labor and preterm delivery in the third trimester for a multifetal gestation, and the specific fetus being coded is not the primary or first-identified fetus. This is typically used in conjunction with codes identifying the specific type of multifetal pregnancy and the outcome for the individual fetus.

• Always sequence this code after the primary code identifying the specific multifetal pregnancy (e.g., O30.-).
• Ensure documentation specifies "third trimester" for both the labor and the delivery.
• Distinguish carefully between "other fetus" and the primary fetus when coding multifetal pregnancies.