Fetus-to-fetus placental transfuse syndrome, first trimester

This code signifies a diagnosis of twin-to-twin transfusion syndrome (TTTS) occurring in the first trimester of pregnancy. It describes an imbalance in blood flow between monochorionic twin fetuses due to abnormal placental vascular anastomoses, leading to one twin (recipient) receiving too much blood and the other (donor) receiving too little.

Use this code when documentation clearly indicates a diagnosis of fetus-to-fetus placental transfusion syndrome identified during the first trimester of a twin pregnancy. This diagnosis is typically made through ultrasound findings demonstrating significant discrepancies in amniotic fluid volume and fetal growth between the twins.

• Ensure documentation specifies "first trimester" for accurate code assignment.
• This code is specific to the donor/recipient syndrome, not general twin complications.
• Consider additional codes for any associated maternal or fetal complications.