I do the same as Mickyc. I take a picture and send it to the parent. If I don't require immediate pick up, I leave the decision to them and they can decide if they want to pick up or not. If it's just a minor bump/bruise than no I don't but for accidents that cause broken skin, bleeding etc than I send a pic.

I have an incident report for any accident that results in a bruise/mark/bump/blood/bandaid. This is just to cover my own butt really. It includes the date and time of accident, child's name, where it happened (playroom, kitchen, outside etc), what happened, what I did for medical attention (sometimes it's just a little TLC), and I get the parent to sign it after reading (usually at end of day pick up as I have only had one incident that the parent came immediately).

When I worked in centres they had us also pinpoint on a diagram of the body where the markings were. I haven't included this in mine yet but do write "mark about an inch long on left side of forehead" or wherever it is.