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 Tax Lien Department Phone Number For Customer Service. Find IRS Tax Lien Department phone number to contact customer service of IRS to get official support for solving technical problems and helpline is 800-913-6050 for customer support by iRS tax lien department. Avoid long waiting times choose shortcuts to contact Tax.