If you accepted what was paid as a final settlement, you cannot sue because you settled the case. If you did not sign a release settling the case, you can go back to the insurer for more money, and if they do not satisfy you, you can sue (the insurer will be liable for whatever you win). Usually, when an insurer gives you money, they insist that you sign a release agreeing that this settles the claim in its entirety.
Answered on Jun 13th, 2013 at 10:25 AM