Maternal care for Anti-A sensitization, second tri, fetus 3

This code signifies specialized maternal care provided due to the presence of Anti-A antibodies in the mother, specifically when the pregnancy is in the second trimester and the third fetus is affected. Anti-A sensitization can lead to hemolytic disease of the fetus or newborn (HDFN) if the fetus has A antigens, requiring close monitoring and potential interventions.

Apply this code when a pregnant patient in her second trimester is receiving care for Anti-A isoimmunization, and the medical record clearly identifies the affected fetus as the third in a multiple gestation. Documentation should confirm the presence of Anti-A antibodies and the gestational age.

• Ensure the medical record explicitly states "fetus 3" in a multiple gestation scenario, as codes differentiate by fetal number.
• Confirm the gestational age falls within the second trimester (weeks 14 through 27+6 days).
• Do not confuse with codes for other blood group sensitizations (e.g., Anti-B, Rh), or for different trimesters or fetal numbers.