More details sought on plan to shift autism from NDIS

Half of new entrants to the NDIS are children under nine, with the majority on the autism spectrum. (Joel Carrett/AAP PHOTOS)

Advocates want certainty on supports provided to children with autism under a major overhaul of the NDIS, as the minister overseeing the scheme tries to reassure parents about the changes.

Children with mild to moderate autism and those with developmental delays will be moved off the National Disability Insurance Scheme and into a separate $2 billion program called Thriving Kids.