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
Below is a list of phone numbers for the Internal Revenue Service. IRS Tax Help Line for Individuals: (800) 829-1040. Hours: MondayâFriday, 7:00 a.m.â7:00 p.m., local time. Welcome to the Internal Revenue Service, you can also visit us at www.irs.gov. To continue in English press 1.