Maternal care for anti-D antibodies, first tri, fetus 3

This code signifies maternal care provided during the first trimester of pregnancy due to the presence of anti-D (Rh) antibodies. This condition indicates that the mother's immune system has produced antibodies against the Rh factor, which can pose a risk to an Rh-positive fetus. The "fetus 3" designation specifies that the care is related to the third fetus in a multiple gestation pregnancy.

Use this code when the medical record documents maternal Rh isoimmunization requiring monitoring or management during the first trimester, specifically for the third fetus in a multifetal pregnancy. Documentation should clearly state the presence of anti-D antibodies and the gestational age.

• Ensure documentation specifies "fetus 3" for multiple gestations; otherwise, use the appropriate single fetus or unspecified fetus code.
• This code is for the maternal care due to the antibodies, not for the antibodies themselves.
• Sequence this code as a primary diagnosis when the anti-D antibodies are the primary reason for the encounter.