Maternal care for oth rhesus isoimmun, second tri, fetus 3

This code signifies specialized prenatal care provided to a pregnant patient due to the presence of rhesus (Rh) isoimmunization, specifically when the Rh incompatibility is not the primary D antigen type. This condition occurs during the second trimester of pregnancy and affects the third fetus in a multiple gestation.

Use this code when a pregnant patient is receiving medical management for an Rh incompatibility that is not Rh(D) related, such as anti-c, anti-E, or anti-Kell antibodies. Documentation should clearly indicate the specific non-D Rh isoimmunization, the second trimester of pregnancy, and that the care is for the third fetus in a multifetal pregnancy.

• Ensure documentation specifies "other" rhesus isoimmunization, not Rh(D) isoimmunization.
• Verify the trimester of pregnancy and the specific fetal number (fetus 3) are clearly documented.
• This code requires an additional code to identify the specific type of other Rh isoimmunization, if known.