As part of the Better Start Initiative and the Helping Children with Autism schemes there are also Medicare rebates for children up to 15yrs of age as long as the management plan is in place before the child turns 13.  You will need a referral from you GP for these Medicare rebates. A fact sheet on these rebates can be found at http://www.health.gov.au/internet/main/publishing.nsf/Content/children-disabilites-factsheetforparents