Question:

I have a 100% permanent rating. If I get the cochlear implants, will it effect that rating?

Jim's Reply:

I wish I could give you a definitive answer, but I can't. There's a fair amount of discussion about conditions rated at 100% permanent that are cured by treatments that didn't exist when the rating was awarded.
 

The best example of this is HepC. HepC has been a problem in the military since the beginning and when the disease is bad, it's very bad and often rated at 100% if it's service connected. A few years ago a cure came about in pill form. These are very expensive treatments and there was debate about how much it would cost and VA went ahead in the face of the financial impact and began treating and curing vets.
 

The treatment for HepC is pretty much absolute...you either have the disease or you don't. So...what to do?
 

Residuals of the disease and the treatment are always considered if there is such a dramatic cure. In the case of cochlear implants, the cure isn't always that dramatic. Your hearing may not return to 100% but there may be improvements of varying degrees. 
 

If you'll click here https://search.usa.gov/search?affiliate=bvadecisions and enter the search term <cochlear implant> you'll see how the BVA views different situations with appeals and decisions like this https://www.va.gov/vetapp15/Files3/1526552.txt .

I have a history of advising vets that they should consider the improvements to their overall health before they worry about the final rating. Take care of yourself first!  Good luck sir.