I, very belatedly< filed a claim for my ruined hearing several years ago,
Should have done it 40+ years ago but had a very bad VA experience with a housing loan application.
Finally did it after getting in the VA system as part of retiring.
Had a veterans advisor help with the paperwork, went for a hearing test, and now get 50%.
Does not make up for the years of being half deaf, but.............No way to know if the VA would have been as easy to deal with as this last episode.
They do hearing loss and tinnitus mostly based on MOS now. I was field artillery so tinnitus is assumed for that MOS at 10%.