Hi journey2010, welcome to Ottawa club. I don't know much about Autism Spectrum Disorder but what CHC looks for is someone burden on Canadian health system. If your son requires 24/7 attention or if he requires expensive medicines all the times than they might send you a procedural fairness letter which will ask you to explain the costs associated with your son's disability. At the moment, you haven't done youur medicals, when you do receive medical request than you can discuss this with your DMP as well.