Australia's National Disability Insurance Scheme is undergoing a Government-commissioned review, as cost blowouts threaten the program's future.

Professor Bruce Bonyhady, an original architect of the NDIS, is co-chairing the review and argued that a fundamental shift is crucial to the scheme's development.

Australian correspondent Oliver Peterson says the NDIS is growing by 14 percent per year as more children are diagnosed with autism.

"11 percent of boys aged 5 to 7 are recipients of the National Disability Insurance Scheme- we have got so many children in Australia at the moment being diagnosed."

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