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
Contact the IRS by telephone to ask your question. Their telephone number is 1-800-829-1040, and the hours of operation for the phone service are Monday through Friday, 7:00 a.m. to 10:00 p.m. in your local time zone. 3. Visit your local IRS office. This is a place where you can meet with an IRS representative to discuss your tax questions in person.