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

This code signifies an infection of the amniotic sac and membranes (chorioamnionitis or amnionitis) during pregnancy, where the specific trimester of gestation is not documented. It indicates that the infection is affecting the fifth fetus in a multiple gestation pregnancy.

Use this code when documentation confirms an infection of the amniotic sac and membranes in a multiple gestation pregnancy, specifically affecting the fifth fetus, and the trimester is not specified. This typically occurs in cases of premature rupture of membranes or ascending infections.

• Ensure the documentation clearly identifies the affected fetus as the fifth in a multiple gestation.
• If the trimester is known, a more specific code from the O41.1- series should be used.
• Do not use this code if the infection is localized to the uterus without involving the membranes.