The DC charger port above the shifter is dead. Can anyone tell me where to look for a blown fuse? It was working prior to today.

 

The first place to look would be your owner's manual.

If you asking about your 2012 sedan try fuse #18 in the in-cabin fuse box. If that's not it here's a whole set of service manuals for that car:
Index of /FSM/G37/Sedan/2012
courtesy of the fine folks at NICOclub

 

Thank you sir. I was able to swap the spare & now have a functional phone charger. Going to pick up some spares to prevent a future situation.