Chorioamnionitis, second trimester, fetus 2

This code signifies an inflammation of the fetal membranes (chorion and amnion) and amniotic fluid occurring during the second trimester of pregnancy, specifically affecting the second fetus in a multiple gestation. This infection can lead to serious maternal and fetal complications, including preterm labor and sepsis.

Use this code when documentation clearly indicates chorioamnionitis diagnosed in the second trimester for the second fetus in a multifetal pregnancy. Supporting documentation includes clinical findings such as maternal fever, uterine tenderness, foul-smelling amniotic fluid, and laboratory evidence of infection.

• Ensure the documentation specifies "second trimester" and "fetus 2" for accurate code assignment.
• Do not confuse with chorioamnionitis occurring in other trimesters or affecting other fetuses in a multiple gestation.
• Always sequence this code after the primary obstetric complication if applicable, and consider additional codes for associated maternal or fetal conditions.