In simple words: A procedure to fix a hole in the diaphragm of a baby still in the womb. This hole lets organs from the belly go into the chest, making it hard for the lungs to grow. A small balloon is placed in the baby's windpipe to help the lungs develop. The balloon is removed later, and the rest of the repair happens after the baby is born.

Repair of a congenital diaphragmatic hernia (CDH) in a developing fetus to allow passage of abdominal contents into the thoracic cavity.The fetal trachea is temporarily blocked to facilitate the repair, promoting normal lung growth.The procedure involves placing a detachable balloon in the fetal trachea to prevent fluid buildup.The balloon is later removed, allowing for vaginal delivery. Complete hernia repair occurs after birth.

Example 1: A fetus is diagnosed with a large CDH threatening lung development. Fetal surgery with tracheal occlusion is performed to improve the chances of survival and normal lung function after birth., A pregnant woman is referred for fetal surgery consultation at 24 weeks gestation due to a severe left-sided CDH. S2400 is performed to repair the defect., A fetus with a right-sided CDH undergoes in-utero repair using a fetoscopic technique.The tracheal balloon is successfully placed and removed prior to delivery.

Documentation should include prenatal imaging confirming CDH diagnosis, operative report detailing the procedure, and post-operative monitoring reports.

** S2400 is a temporary national code used by private payers and Medicaid.It is not payable by Medicare.