Triplet preg w two or more monochorionic fetuses, first tri

This code signifies a pregnancy involving three fetuses, where at least two of these fetuses share a single chorion (monochorionic) and the pregnancy is currently in the first trimester. This condition carries increased risks due to potential complications associated with shared placental structures.

Apply this code when documentation clearly indicates a triplet gestation with two or more monochorionic fetuses, specifically identified during the first trimester. This is typically supported by ultrasound reports detailing chorionicity and gestational age.

• Ensure documentation explicitly states "triplet pregnancy" and "monochorionic" for at least two fetuses.
• Verify the gestational age falls within the first trimester (up to the end of the 13th week).
• Do not confuse with dichorionic or trichorionic triplet pregnancies, or those in later trimesters.