The CDR will look at all the conditions that were present at the time of the previous allowance and all his current conditions. SSA can not require anyone to have major surgery, due to the potential risk. They will be looking to see if there has been any improvement in his condition(s), and if so, has this improvement resulted in the ability to work. Are his seizures still happening at the frequency they were when he was allowed?

Also, there has been quite a delay in doing CDRs. Although you expect him to be reviewed this year, it may not be for a couple more years. SSA has been working to catch up on CDRs, but with budget cuts, their first priority is handling new applications and reconsiderations.