Yes, the Nikon 200-400 uses regular 52mm filters as long as they are not too thick. I use the B&W 3.0 (10 stop) ND filter to take photos of the sun. Live view and eyepiece closure are advised to save your eyes from UV and IF light than may or may not be coming through the lens even with the filter.
I'm sure I've seen replacement filter holders for the 200-400 but can't find one right now. Don't loose the original.