Fetal anemia and thrombocytopenia, first trimester, fetus 2

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

Apply this code when documentation clearly indicates fetal anemia or thrombocytopenia in the second fetus of a multifetal pregnancy, with the diagnosis established during the first trimester (up to the end of the 13th week of gestation). This typically follows diagnostic procedures such as fetal blood sampling or advanced ultrasound findings suggestive of these conditions.

• Ensure the medical record explicitly identifies the affected fetus as "fetus 2" and confirms the first-trimester diagnosis.
• Do not use this code for single gestations or if the condition is diagnosed in a different trimester or in a different fetus.
• Code any associated maternal conditions or complications separately, and consider sequencing guidelines for obstetric diagnoses.