Usually, no—service centers generally do not repair or recoat a scratched or worn front element in place. The practical repair is typically to replace the front element.

If the damage is only to the coating, it may have little or no visible effect on real photos. Minor front-element wear often matters less than people expect. If the glass itself is scratched, recoating will not fix the missing or damaged glass, and any effect is more likely to show up in difficult situations such as strong flare or shooting into bright light.

Best advice: test the lens with your normal subjects and also against bright light. If you can’t see a problem, you may not need to do anything. If you do see image degradation, ask an authorized service center for an evaluation; they will most likely recommend front-element replacement rather than recoating.