Mat care chromosomal abnlt in fetus, unspecified, fetus 3

This code signifies maternal care provided due to a suspected or confirmed chromosomal abnormality in the fetus, specifically when the pregnancy involves triplets and the abnormality is identified in the third fetus. This includes situations where genetic testing (e.g., amniocentesis, CVS, NIPT) or ultrasound findings suggest a chromosomal disorder.

Apply this code when documentation indicates maternal management for a chromosomal anomaly affecting the third fetus in a triplet pregnancy, and the specific type of abnormality is not yet determined or specified. This is appropriate for ongoing monitoring, counseling, or preparation for delivery related to the suspected condition.

• Ensure documentation clearly specifies "fetus 3" in a triplet pregnancy.
• Do not use if the specific chromosomal abnormality is known; instead, code to the more specific O35.1xx codes.
• This code is for maternal care; a separate code for the fetal condition (if known) would be reported on the infant's record after birth.