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
While 800-829-1040 is IRS's best toll-free number, there are 12 total ways to get in touch with them. The next best way to talk to their customer support team, according to other IRS customers, is by calling their 800-829-7650 phone number for their Federal Payment Levy Program department.