Velamentous insertion of umbilical cord, first trimester

This code signifies a condition where the umbilical cord inserts into the fetal membranes (chorioamnion) rather than directly into the placental mass, with the vessels then traveling unprotected through the membranes to the placenta. This specific code indicates that this finding was identified during the first trimester of pregnancy.

Use this code when documentation clearly states a diagnosis of velamentous cord insertion and specifies that this diagnosis was made during the first trimester. This typically arises from ultrasound findings during early pregnancy screening.

• Ensure the documentation explicitly states "first trimester" for accurate code assignment.
• Distinguish from other cord insertion anomalies, such as marginal or battledore insertion.
• Always sequence this code after the primary obstetric complication or condition, if applicable.