So my former employer forgot to add the 12 dd on my W-2 should I wait until I get a new w-2 or can I go ahead and file

The only reason I know that the 12 dd is missing is because my mother works for the same company that I used to work for. I got my W-2 the other day without it and I just want to make sure I can file without having to try and get another one with the 12 DD