Fetomaternal placental transfusion syndrome, first trimester

This code signifies a condition in the first trimester of pregnancy where there is an abnormal transfer of blood from the fetus to the mother through the placenta. This can lead to fetal anemia and, in severe cases, hydrops fetalis due to the significant blood loss.

Use this code when documentation explicitly states a diagnosis of fetomaternal placental transfusion syndrome occurring during the first trimester. Supporting documentation would include ultrasound findings indicating fetal anemia or hydrops, and laboratory results confirming fetal blood in the maternal circulation.

• Ensure the documentation specifies "first trimester" for accurate code assignment.
• Distinguish from other placental transfusion syndromes, such as twin-to-twin transfusion, which have different codes.
• Look for specific mention of fetal anemia or hydrops as a consequence of the transfusion.