Condition Description. Truncus arteriosus is an uncommon congenital heart defect where a baby is born with a single blood vessel (called a truncus) coming from the main pumping chambers of the heart (the ventricles) instead of two vessels (one from each ventricle).ondition Description. Truncus arteriosus is an uncommon congenital heart defect where a baby is born with a single blood vessel (called a truncus) coming from the main pumping chambers of the heart (the ventricles) instead of two vessels (one from each ventricle).
IRS Office Customer Service Phone Number Phone Number: 1 (800) 829-1040. Shortcut: N/A - Edit
IRS Tollfree numbers. People looking for their refunds have a new toll-free number: 1-800-829-1954. Individuals who filed a 1040 series return can check on the status of their current year tax refund with this toll-free number. 800-829-1040. IRS Tax Help Line for Individuals.