Mat care chromsoml abnlt in fts, other chromsoml abnlt, fts1

This code indicates that a pregnant patient is receiving specialized medical attention due to a suspected chromosomal abnormality in one fetus, specifically an abnormality other than those more commonly specified (e.g., Down syndrome). This care is provided when diagnostic testing or screening suggests a genetic deviation that requires further evaluation or management.

This code is appropriate when documentation indicates maternal care for a fetus with a suspected chromosomal anomaly that is not otherwise specified or is a less common type, and the pregnancy involves a single fetus. It should be used when diagnostic tests like amniocentesis, chorionic villus sampling (CVS), or non-invasive prenatal testing (NIPT) suggest such an issue, or when there are ultrasound findings indicative of a chromosomal problem.

• Ensure documentation specifies "fetus 1" if applicable, or if it's a singleton pregnancy.
• Do not use this code if the specific chromosomal abnormality (e.g., Down syndrome, Patau syndrome) is known or suspected and has a more specific O35 subcategory.
• Always sequence this code as a secondary diagnosis, with the primary diagnosis reflecting the reason for the encounter (e.g., routine prenatal visit, high-risk pregnancy management).