Mat care chromsoml abnlt in fetus, sex chromo abnlt, fetus 3

This code signifies ongoing maternal medical management and surveillance due to a confirmed or suspected sex chromosome abnormality in the third fetus of a multiple gestation pregnancy. This includes conditions like Turner syndrome (monosomy X) or Klinefelter syndrome (XXY) identified prenatally. The focus is on the maternal care necessitated by this fetal condition.

Apply this code when a pregnant patient carrying triplets or more is receiving care specifically because one of the fetuses (designated as fetus 3) has been diagnosed with or is suspected of having a sex chromosome abnormality. Documentation should clearly indicate the specific fetal abnormality, the fetal number, and the maternal care provided as a result.

• Ensure documentation specifies "fetus 3" to differentiate from other fetuses in a multiple gestation.
• Do not use this code for autosomal chromosomal abnormalities; refer to O35.1XX- for those cases.
• This code is for maternal care; additional codes for the fetal condition itself (e.g., Q96.- for Turner syndrome) would be reported on the infant's record after birth.