Yes, you can reinstall Windows on a new SSD using the same installation code.
Yes, you can reinstall Windows on a new SSD using the same installation code.
Yes, you can reinstall Windows on a new SSD using the same installation code.
Retail codes you obtain from PC World differ from OEM versions in that OEM keys aren't meant for transfer between systems, though you might still use them...
What version of code are you referring to? Did you mean to ask about a key? You don't need to use the key if you're installing on the same computer.