Mat care chromosomal abnlt in fetus, Trisomy 13, fetus 3

This code signifies maternal care provided due to a suspected or confirmed diagnosis of Trisomy 13 (Patau syndrome) in the third fetus of a multiple gestation pregnancy. Trisomy 13 is a severe chromosomal disorder characterized by the presence of an extra copy of chromosome 13, leading to multiple congenital anomalies and typically a poor prognosis.

Apply this code when the mother is receiving antenatal care specifically because one of the fetuses, identified as the third fetus, has been diagnosed with or is suspected of having Trisomy 13. Documentation should clearly indicate the specific chromosomal abnormality (Trisomy 13) and the affected fetus's position (fetus 3) within a multiple gestation.

• Always confirm the specific chromosomal abnormality (Trisomy 13) and the identified fetus (fetus 3) from the documentation.
• Do not confuse with other trisomies (e.g., Trisomy 18, Trisomy 21) or other chromosomal abnormalities.
• This code is for maternal care; a separate code for the fetal condition itself may be used on the infant's record after birth, if applicable.