Fetomaternal placental transfuse syndrome, second trimester

This code signifies a condition where there is an abnormal transfer of blood from the fetus to the mother (fetomaternal hemorrhage) that is significant enough to cause fetal anemia, occurring during the second trimester of pregnancy. This transfusion syndrome can lead to various fetal complications due to the loss of fetal blood volume.

Use this code when documentation explicitly states a diagnosis of fetomaternal placental transfusion syndrome, confirmed by diagnostic testing (e.g., Kleihauer-Betke test, flow cytometry) showing fetal red blood cells in maternal circulation, and the pregnancy is in the second trimester. This code is appropriate when the condition is actively managed or being investigated.

• Ensure documentation specifies "syndrome" to differentiate from simple fetomaternal hemorrhage without significant clinical impact.
• Confirm the gestational age falls within the second trimester (14 weeks 0 days to 27 weeks 6 days).
• Code any associated fetal conditions (e.g., fetal anemia, hydrops fetalis) separately, if documented.