Placentitis, first trimester, fetus 2

This diagnosis code signifies inflammation of the placenta occurring during the first trimester of pregnancy, specifically affecting the second fetus in a multiple gestation. Placentitis can be caused by various infectious agents and may lead to adverse pregnancy outcomes.

Use this code when documentation clearly indicates placentitis diagnosed in the first trimester for the second fetus in a multifetal pregnancy. Supporting documentation would include ultrasound findings, pathology reports, or clinical notes detailing the inflammatory process within the placenta.

• Ensure the documentation specifies "first trimester" and clearly identifies the "second fetus" in a multiple gestation.
• Do not confuse with other placental conditions like placental abruption or placenta previa.
• Always sequence this code with an appropriate code for the type of multiple gestation (e.g., O30.0- for twin pregnancy).