Mat care chromosomal abnlt in fetus, Trisomy 13, fetus 1

This code signifies maternal care provided due to a confirmed or suspected diagnosis of Trisomy 13 (Patau syndrome) in a single fetus. It indicates that the mother is receiving specialized obstetric management related to this specific chromosomal anomaly.

Apply this code when documentation indicates maternal care for a fetus diagnosed with, or highly suspected of having, Trisomy 13. This includes scenarios where genetic testing (e.g., amniocentesis, CVS, NIPT with confirmatory testing) has identified the condition, or when ultrasound findings are highly suggestive.

• Ensure documentation specifies "fetus 1" if multiple gestations are present; otherwise, use the unspecified fetus code.
• This code is for maternal care for the condition, not the condition itself in the fetus.
• Always sequence this code as a secondary diagnosis, following the primary obstetric code for the encounter.