AIM/Anthem BCBS Appeal Instructions We’ve made filing appeals and complaints EASY for providers and patients. Just follow the instructions below. Click HERE for Appeal Form You will have to set up a User Name and Password to log onto our platform to use our appeal template. When to Appeal: IMMEDIATELY!As soon as AIM denies additional visitsIf your claims are denied for not getting pre-authorizationIf your claims are denied when they were pre-authorized