On September 29, 2014, the IRS released on its website a supplement to the 2014 general instructions for preparing forms in the 1099 series for FATCA compliance.  The supplemental instructions apply to participating foreign financial institutions that elect to fulfill their FATCA reporting obligations using Forms 1099.

The FATCA Supplement to the 2014 General Instructions for Certain Information Returns Reporting on Forms 1099 can be accessed here