It looks like it's just for rail filtering, rather than a DC-DC converter, unless all the circuitry is in the other side. A lot of circuits would not miss it, but IDK what that circuit really needs.
It's probably not super critical, you might find something similar on another similar PCB like a cablebox or old motherboard. How did they get damaged ?
If you can solder it back, I'd just do that, lay a little piece of bare copper wire between the pad and tinned end of the wire if the leg is too short now. Use flux if you have any, it would solder easy.