Placentitis, unspecified trimester, fetus 5

This code signifies inflammation of the placenta occurring at an unspecified point during pregnancy, specifically affecting the fifth fetus in a multiple gestation. Placentitis can be infectious or non-infectious, potentially leading to adverse maternal and fetal outcomes.

Apply this code when documentation confirms placentitis in a multifetal pregnancy where the specific trimester of onset is not recorded, and the condition is attributed to the fifth fetus. Supporting documentation includes pathology reports, obstetrician notes detailing placental inflammation, and clear identification of the affected fetus.

• Ensure the medical record explicitly identifies "fetus 5" as the affected fetus in a multiple gestation.
• If the trimester is known, a more specific O41.14- code should be used (e.g., O41.1415 for first trimester).
• Code any associated maternal conditions or fetal complications separately.