I had a similar incident happen to me. I tapped someone, and while we didn't exchange information, I gave my insurance carrier a heads-up, just in case the other driver later claimed a hit and run. Fortunately, I had a different insurance carrier and my premiums didn't increase. In fact they thanked me for the call.
On another note, I've learned the hard way that Geico is not a customer based company. You can't reason with these folks. When they make a decision, no matter how obviously wrong they are, they will not listen to reason. I'm thinking these folks receive some kind of profit sharing because the erroneous decisions they make end up costing us money and ultimately making their pockets fatter.
