[Back Surgery While on Active Duty]

I'm currently serving on active duty and have been receiving injections for l4, l5 disc bulge.  Today was my tenth injection and I dread every trip to that office.  These injections have provided limited relief over a 3 year period. Today the doctor suggested a surgical referral. My question is, does the VA place a specific rating towards the surgery type performed?  For instance is x% rating provided to a "disc fusion" if the surgery is a success and no pain remains upon separation/retirement?  Can you file a claim and a receive a percentage disability because of the surgery alone?  Or is a claim/rating only possible if the surgery isn't a success and pain remains upon separation/retirement?

Hopefully this isn't a silly question.