Placentitis, second trimester, fetus 4

This code signifies inflammation of the placenta occurring during the second trimester of pregnancy, specifically affecting the fourth fetus in a multiple gestation. Placentitis can lead to adverse pregnancy outcomes, including preterm labor, fetal distress, and infection.

Assign this code when documentation clearly indicates placentitis diagnosed in the second trimester of a multifetal pregnancy, and the condition is specifically attributed to the fourth fetus. Supporting documentation would include ultrasound findings, pathology reports, and physician notes detailing the trimester and affected fetus.

• Ensure the documentation explicitly states "second trimester" and identifies the "fourth fetus" in a multiple gestation.
• Do not confuse with other placental conditions like placental abruption or placenta previa.
• Always sequence this code after the primary obstetric code for the pregnancy.