If you are an alien individual, file Form 8843 to explain the basis of your claim that you can exclude days present in the United States for purposes of the substantial presence test because you: Were an exempt individual. Were unable to leave the United States because of a medical condition or medical problem. Current revision Form 8843 PDF Recent developments None at this time. Other items you may find useful All Form 8843 revisions About Publication 519, U.S. Tax Guide for Aliens Other current products Related items About Form 1040-NR, U.S. Nonresident Alien Income Tax Return About Form 1040-NR-EZ, U.S. Income Tax Return for Certain Nonresident Aliens With No Dependents About Form 8840, Closer Connection Exception Statement for Aliens
