Fetal anemia and thrombocytopenia, third trimester, unsp

This code signifies the presence of fetal anemia or thrombocytopenia identified during the third trimester of pregnancy. These conditions involve abnormally low red blood cell count or platelet count, respectively, in the fetus. They can arise from various etiologies, including alloimmunization, infections, or genetic disorders.

Apply this code when documentation confirms fetal anemia or thrombocytopenia in a pregnant patient who is in her third trimester, and the specific type or cause is not further specified or is not applicable. This code is appropriate when the diagnostic workup is ongoing, or the exact etiology remains undetermined.

• Ensure documentation explicitly states "third trimester" and "fetal anemia" or "fetal thrombocytopenia."
• Do not use if a more specific code for the type of fetal anemia/thrombocytopenia or its cause is available (e.g., O36.8231 for alloimmune fetal anemia).
• Sequence this code as a secondary diagnosis when the primary reason for the encounter is a complication directly related to the fetal condition.