i would contact medicare on monday on their 13 number. ask them what they need you to provide. i believe it's not a hard process, but to be honest, i've never had to do it directly as most people are able to get a letter from their doctor and provide it to centrelink and push the doctor to push it through to ACIR. i would just hate for your CCB to be cut for a couple of weeks while it's fixed kwim?