Preterm labor second tri w preterm del third tri, fetus 2

This code signifies preterm labor occurring during the second trimester of pregnancy (weeks 14 0/7 to 27 6/7) that results in a preterm delivery during the third trimester (weeks 28 0/7 to 36 6/7). It specifically applies when this scenario involves the second fetus in a multiple gestation pregnancy.

Use this code when documentation clearly indicates the onset of preterm labor symptoms (e.g., contractions, cervical changes) in the second trimester, followed by the actual birth of the second fetus between 28 0/7 and 36 6/7 weeks gestation. Supporting documentation includes physician notes detailing the timing of labor onset, gestational age at delivery, and the fetus number.

• Ensure the delivery of the second fetus occurred in the third trimester, not the second.
• Verify the documentation specifies "fetus 2" to differentiate from other fetuses in a multiple gestation.
• Sequence this code after the primary obstetric code for the encounter, if applicable.