Infct of amniotic sac and membrns, unsp, third tri, fetus 3

This code signifies an unspecified infection of the amniotic sac and membranes (chorioamnionitis) occurring during the third trimester of pregnancy, specifically affecting the third fetus in a multiple gestation. This condition can lead to significant maternal and fetal morbidity, including preterm labor, sepsis, and neonatal complications.

Use this code when documentation confirms an infection of the amniotic sac and membranes in the third trimester for the third fetus in a multifetal pregnancy, but the specific type of infection is not identified. Supporting documentation would include clinical signs of chorioamnionitis (e.g., maternal fever, uterine tenderness, foul-smelling amniotic fluid), laboratory findings (e.g., elevated white blood cell count), and ultrasound findings.

• Ensure the documentation clearly specifies "unspecified" infection if the causative organism is unknown.
• Verify the trimester of pregnancy and the fetal number (third fetus) are explicitly stated in the medical record.
• Always sequence this code after the primary obstetric complication if applicable, such as preterm labor.