Matern care for oth or susp poor fetl grth, third tri, fts3

This code signifies antenatal care provided to a pregnant patient in her third trimester due to concerns about a specific fetus (fetus 3 in a multiple gestation) experiencing suboptimal growth. This includes situations where the fetus is smaller than expected for gestational age, but the exact cause may not yet be fully determined or is attributed to factors other than those specified in more precise codes.

Apply this code when documentation indicates a singleton pregnancy or, in a multiple gestation, specifically identifies fetus 3 as having known or suspected poor fetal growth during the third trimester. This diagnosis is typically supported by ultrasound findings showing fetal biometry below the 10th percentile for gestational age, or clinical suspicion based on fundal height measurements.

• Ensure the documentation clearly specifies "fetus 3" in cases of multiple gestation to differentiate from other fetuses.
• Confirm the gestational age falls within the third trimester (28 weeks 0 days to 40 weeks 6 days).
• If the specific cause of poor fetal growth is identified (e.g., placental insufficiency, chromosomal abnormality), a more specific code should be used as the primary diagnosis, with this code potentially used as a secondary diagnosis if still relevant for maternal care.