A4 received a response (see below) from the NDIS to letters sent previously to multiple ministers - see https://a4.org.au/node/2730 

While the response suggests that the triad of autistic impairments, social, communication, and behavioural impairments, might be beaten into shape under the categories available in the legislation, it shows disappointingly poor understanding of autistic impairments and the needs of autistic Australians. It says ... 

As an example, a communication impairment can be related to several impairment categories such as neurological, cognitive, physical or psychosocial depending on cause and therefore the supports required may be very different. 

The government's response does not appreciate that aspects of "communication impairment" could also be under the other two categories - intellectual or sensory. It does not appreciate that communication impairment that is part of autism will usually be fundamentally different from communication impairment associated with other disability types. 

So the categories in the legislation are not likely to be helpful; they are more likely to get in the way of proper understanding of an individual's disability. They have nothing to do with a "person-centred approach". They have nothing to do with need. They risk doing more harm than good.