In general, there is not a way to tell if a Form 1099-R is
reporting a distribution from a Roth IRA or a Traditional IRA.
Some of the distribution codes used can indicate one type of
account or the other, but there is not a place on the form that will indicate
the type of account. You may need to
contact the payer for more information.
Take a look at the information below for a list of the
distribution codes in case that is helpful.
https://ttlc.intuit.com/replies/4194736
