Preterm labor second tri w preterm del third tri, fetus 1

This code signifies the onset of labor before 37 completed weeks of gestation, specifically occurring during the second trimester (weeks 14-27), but resulting in a preterm delivery during the third trimester (weeks 28-40). It indicates that the pregnancy progressed from preterm labor in the second trimester to a preterm birth in the third trimester, affecting the first fetus in a multiple gestation.

Use this code when documentation clearly states that preterm labor began in the second trimester, but the actual delivery of the first fetus occurred in the third trimester, prior to 37 weeks. Supporting documentation should include the gestational age at the onset of labor, the gestational age at delivery, and confirmation of a multiple gestation with this being the first fetus.

• Ensure the documentation specifies both the trimester of labor onset and the trimester of delivery.
• Verify that the delivery was indeed preterm (before 37 weeks).
• Confirm this code is for the first fetus in a multiple gestation; subsequent fetuses would use different codes.