Recieved corrected 1099R after I already filed. Box 7 change.

Hi I received a corrected 1099R for my mothers taxes after i already filed..the only change was to box 7.  The original 1099R had box 7 as code 7......the corrected form changed it to code 4 (death- my father had passed). When I made the change to the turbotax federal return,  the amount owed was constant (no change)...do i still need to amend? Also would this affect PA state taxes in anyway?