Can I combine my interest income from all of the (FOREIGN) accounts at the same bank?

I have multiple accounts abroad at different banks. Lets say 1 have:

Me

Bank 1 - 5 different accounts

Bank 2 -  3 different accounts

Bank 3 - 4 different accounts

Can I just make 1 1099-int for each bank instead of each account?

Will this be ok for FATCA?