Infct of amniotic sac and membrns, unsp, second tri, fetus 4

This code signifies an infection of the amniotic fluid and surrounding membranes (chorioamnionitis) occurring during the second trimester of pregnancy, where the specific pathogen or type of infection is not documented. It indicates an intrauterine infection affecting the fourth fetus in a multiple gestation pregnancy.

This code is appropriate when documentation confirms chorioamnionitis in the second trimester of a multiple gestation pregnancy, specifically impacting the fourth fetus, and the infectious agent is not identified. Supporting documentation would include physician notes detailing clinical signs of infection (e.g., fever, uterine tenderness, foul-smelling amniotic fluid), laboratory findings (e.g., elevated white blood cell count, positive amniotic fluid culture without specific organism), and ultrasound findings consistent with chorioamnionitis.

• Ensure the documentation clearly specifies "second trimester" and identifies the infection as affecting the "fourth fetus" in a multiple gestation.
• Do not use this code if a specific infectious organism is identified; instead, use a more specific code from the O41.1- series with an additional code for the organism.
• Always sequence this code as a primary diagnosis when it is the reason for the encounter, followed by any associated conditions or complications.