Maternal care for anti-D antibodies, first tri, fetus 2

This code signifies ongoing maternal medical management during the first trimester of pregnancy due to the presence of anti-D (Rh) antibodies, specifically impacting the second fetus in a multiple gestation. These antibodies can cross the placenta and cause hemolytic disease of the fetus and newborn (HDFN) in an Rh-positive fetus.

Apply this code when a pregnant patient, in her first trimester, has documented anti-D antibodies and is carrying twins, triplets, or higher-order multiples, and the care specifically addresses the second fetus. Documentation should confirm the presence of anti-D antibodies and the gestational age.

• Ensure the documentation clearly specifies "first trimester" and identifies the "second fetus" in a multiple gestation.
• Do not use this code for subsequent trimesters; specific codes exist for second and third trimesters.
• This code is typically used in conjunction with codes for the specific type of multiple gestation (e.g., O30.0-).