Fetal anemia and thrombocytopenia, second trimester, fetus 4

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

Apply this code when documentation specifies fetal anemia and/or thrombocytopenia affecting the fourth fetus in a multifetal pregnancy, with the gestational age falling within the second trimester (weeks 14 through 27+6 days). Supporting documentation should include ultrasound findings, fetal blood sampling results, or other diagnostic reports confirming the condition and fetal order.

• Ensure the documentation clearly identifies the affected fetus as the fourth in a multiple gestation.
• Verify the gestational age falls precisely within the second trimester for accurate coding.
• Do not use this code if only one of the conditions (anemia or thrombocytopenia) is present; there are more specific codes for isolated conditions.