You can find out about amended returns mailed to the IRS processing operations. Form 1040X, Amended U.S. Individual Income Tax Return tells you where you need to mail your return.
Where’s My Amended Return? cannot give you the status of the following returns or claims:
Carryback applications and claims
Injured spouse claims
A Form 1040, U.S. Individual Income Tax Return marked as an amended or corrected return (not a Form 1040X, Amended U.S. Individual Income Tax Return)
An amended return with a foreign address
A business tax amended return
An amended return processed by a specialized unit—such as our Examination Department or our Bankruptcy Department.