the CNI Cochlear Implant Assistance Program will help anyone, regardless of where they are.
Medicare, Medicaid, they're both government-funded insurance. You will have to check with your local health department or family services about Medicare/Medicaid, apply and see if you qualify. I don't know where you are so I wouldn't know where you could try going for insurance/assistance in regards to the implant. Have you check with Vocational Rehab? I've heard that some VR's will pay for the implant.