Hi and welcome! My 5 Yo has SPD as well. I wondering with regards to your therapy payments if there is another way your diagnosis can be coded for greater insurance cooperation. Somewhere there is a list. For example, my daughter has SPD but under that umbrella she has hypotonia (low muscle tone) and before that in her case there was a medical crisis that seemed to be the tiggering event for her SPD so encephalopathy was originally the code that was used for her first OT evaluation (which insurance paid for). I'm not saying you want to lie or ask your provider to but rather to look at specifically how SPD effects him and see if any of those issues are covered under your insurance.