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 Consumer Taxpayers: 1-800-829-1040. IRS Business Customers: 1-800-829-4933. SHARE: ï ï ï ï³ ï. Labels: Address , Contact , Corporate , Corporate Headquarters , Corporate Office , customer service , Internal Revenue Service , phone number , Review , Reviews , US , USA , Washington DC.