Other malformation of placenta, second trimester

This code signifies the presence of an abnormal structural development of the placenta, other than those specifically classified elsewhere, identified during the second trimester of pregnancy. These malformations can affect placental function and potentially impact fetal development or maternal health.

Apply this code when documentation clearly indicates a placental malformation, such as a circumvallate placenta, placenta accreta (if not specified as total or partial), or other unlisted structural anomalies, that is diagnosed between 14 weeks 0 days and 27 weeks 6 days gestation. The medical record should specify the type of malformation and the gestational age at diagnosis.

• Ensure the documentation specifies "second trimester" or provides a gestational age falling within 14-27 weeks.
• Differentiate from specific placental malformations like placenta previa (O44.-) or placental infarction (O43.81-).
• Always sequence this code after the primary obstetric code indicating the pregnancy.