Maternal care for Anti-A sensitization, second tri, fetus 4

This code signifies ongoing specialized prenatal care for a pregnant patient in her second trimester who has developed Anti-A antibodies, specifically impacting the fourth fetus. This maternal sensitization poses a risk of hemolytic disease of the fetus and newborn (HDFN) due to ABO incompatibility.

Apply this code when a pregnant patient, carrying her fourth fetus, is receiving active management and monitoring for Anti-A sensitization during the second trimester. Documentation should clearly indicate the trimester, the specific antibody identified (Anti-A), and the parity of the fetus being monitored.

• Ensure the medical record explicitly states "Anti-A sensitization" and not a general ABO incompatibility.
• Verify the trimester of pregnancy and the fetal number are accurately documented to support the specificity of this code.
• Do not confuse with codes for other maternal blood group incompatibilities (e.g., Rh sensitization).