Mat care chromosomal abnlt in fetus, Trisomy 13, fetus 2

This code signifies ongoing maternal medical management and surveillance due to a confirmed or suspected diagnosis of Trisomy 13 (Patau syndrome) in the second fetus of a multiple gestation pregnancy. This condition is a severe chromosomal disorder characterized by the presence of an extra copy of chromosome 13, leading to significant developmental abnormalities.

Use this code when the mother is receiving specialized care, monitoring, or counseling because a prenatal diagnostic test (e.g., amniocentesis, CVS, NIPT with confirmatory testing) has identified or strongly suggested Trisomy 13 in fetus 2. Documentation should clearly state the suspected or confirmed chromosomal abnormality and specify "fetus 2" in a multiple gestation.

• Ensure documentation explicitly identifies "fetus 2" in a multiple gestation to differentiate from other fetuses.
• This code is for maternal care for the condition in the fetus, not for the fetal condition itself.
• Sequence this code as a primary diagnosis when the reason for the encounter is maternal care related to the fetal Trisomy 13.