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 Customer Service Phone Number [ Irs.gov Customer Support ] IRS customer care contact details is different for various services and it is as follows, IRS customer Service number for Tax Help Line for Individuals: (800) 829-1040. Working Hours are from MondayâFriday at 7:00 a.m to 7:00 p.m., local time. For the services Business and Specialty Tax Line call to (800) 829-4933. Working Hours will be from Monday to Friday, 7:00 a.m.â7:00 p.m.,local time.