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

This code signifies an infection of the amniotic sac and membranes (chorioamnionitis) where the specific infectious agent is not identified. It indicates an inflammatory response within the fetal membranes and amniotic fluid, typically due to bacterial ascent from the vagina, without specifying the gestational trimester.

Use this code when documentation clearly indicates chorioamnionitis or intra-amniotic infection, but the specific pathogen is unknown or not documented. This applies when the trimester of pregnancy is not specified or is not relevant to the clinical scenario. It is appropriate for cases where the infection is confirmed but lacks further specificity regarding cause or timing.

• Avoid using this code if the specific infectious organism (e.g., bacterial, viral) is identified; instead, code to the more specific O41.11- or O41.12- series.
• Ensure documentation supports the diagnosis of chorioamnionitis, even if the cause is unspecified.
• Do not use if the trimester is clearly documented; instead, select the appropriate O41.101- through O41.103- code.