Placentitis, first trimester, fetus 3

This code signifies inflammation of the placenta occurring during the first trimester of pregnancy, specifically affecting the third fetus in a multiple gestation. Placentitis can be infectious or non-infectious and may lead to adverse pregnancy outcomes.

Apply this code when documentation clearly indicates placentitis diagnosed in the first trimester for the third fetus in a multifetal pregnancy. Supporting documentation would include ultrasound reports, pathology findings, and physician notes detailing the placental inflammation and gestational age.

• Ensure the documentation specifies "first trimester" and "fetus 3" for accurate code assignment.
• Do not confuse with other placental conditions like placental abruption or placenta previa.
• Sequence this code as a secondary diagnosis following the primary reason for the encounter, if applicable.