Fetal anemia and thrombocytopenia, first trimester, fetus 4

This code signifies the presence of anemia and/or thrombocytopenia in the fourth fetus of a multiple gestation pregnancy during the first trimester. These conditions indicate a deficiency in red blood cells or platelets, respectively, in the developing fetus.

This code is used when diagnostic testing, such as fetal blood sampling or ultrasound findings, confirms anemia or thrombocytopenia in the fourth fetus. Documentation should clearly specify the trimester, the specific fetal anomaly, and the fetal number in a multiple gestation.

• Ensure documentation explicitly identifies the affected fetus as the "fourth fetus" in a multiple gestation.
• Verify the gestational age falls within the first trimester (up to the end of the 13th week).
• Do not use this code for maternal anemia or thrombocytopenia; this code is specific to the fetus.