Infct of amniotic sac and membrns, unsp, third tri, fetus 5

This code signifies an infection of the amniotic sac and surrounding membranes (chorioamnionitis) occurring during the third trimester of pregnancy, where the specific pathogen causing the infection is not identified. It indicates that the infection is affecting the fifth fetus in a multiple gestation pregnancy.

This code is appropriate when documentation confirms chorioamnionitis in the third trimester of a multifetal pregnancy, specifically impacting the fifth fetus, and the causative organism is not specified. It should be used when the physician explicitly states "unspecified infection" or "infection of unknown etiology" of the amniotic sac and membranes.

• Ensure documentation clearly specifies "unspecified" infection and the affected fetus number (fifth fetus).
• Do not use if a specific pathogen (e.g., bacterial, viral) is identified; instead, use a more specific code from the O41.1- series.
• Sequence this code after the primary obstetric code indicating the pregnancy and delivery.