Preterm labor second tri w preterm delivery third tri, unsp

This code signifies the onset of labor before 37 weeks of gestation, specifically occurring during the second trimester (weeks 14-27), that results in a preterm delivery during the third trimester (weeks 28-40). It describes a situation where the labor process begins prematurely but the actual birth occurs later in the pregnancy.

Apply this code when documentation clearly indicates preterm labor initiated in the second trimester, with the subsequent preterm delivery occurring in the third trimester. Supporting documentation would include gestational age at onset of labor, gestational age at delivery, and confirmation of preterm delivery.

• Always verify the trimester in which labor began and the trimester of delivery.
• Do not use if both preterm labor and preterm delivery occur within the same trimester.
• Sequence this code as the principal diagnosis when it is the reason for the encounter.