Maternal care for anti-D antibodies, third tri, fetus 1

This code signifies a pregnant patient in her third trimester who is receiving medical care due to the presence of anti-D (Rh) antibodies. These antibodies indicate Rh sensitization, which can pose a risk to the fetus if the fetus is Rh-positive. The code specifically identifies this care as pertaining to the first fetus in a multiple gestation or the only fetus in a singleton pregnancy.

Use this code when documentation confirms a pregnant patient in her third trimester is receiving monitoring, treatment, or management related to Rh isoimmunization. This typically involves serial antibody titers, fetal surveillance (e.g., Doppler studies, amniocentesis), or consideration of intrauterine transfusions. Documentation should clearly state the trimester and the presence of anti-D antibodies.

• Ensure the documentation specifies "anti-D" or "Rh antibodies" and not other types of maternal antibodies.
• Verify the trimester of pregnancy is clearly documented as the third trimester.
• This code is specific to "fetus 1"; use appropriate codes for subsequent fetuses in multiple gestations.