If my child was diagnosed with a cyst on his brain and chromosome 16 deletion which has caused delays in potty training, speech, and motor skills does this qualify?

My child was diagnosed with a cyst on his brain and chromosome 16 deletion. His symptoms mimic Autism but tested negative twice for Autism. He is 4 years old but can only say 5 words (not correctly but close enough you can figure out what he's saying) He is not potty trained and shows no sign of understanding when he needs to go. He currently receives care from speech therapy, occupational therapy, physical therapy, neurology, GI, and has been apart of different Development Institutions trying to help him as we have traveled with the military. Does this qualify him as developmentally disabled?