I had an IEP meeting. CST told me that Neuropsychological ED like ODD, IED and ADHD are not disabilities, including amblyopia. Is this true?

I disclosed that my son was clinically diagnosed with IED, ODD and school behaviorist said he may have ADHD. He also has amblyopia which the CST did not even want to hear. My sons vision gets progressively worse, this is not a common condition. I told the CST that my oldest son had an IEP when we lived in a different county (generic component). They did not care about this. My youngest son has problems relating with people, maintaining relationships and friendships. He needs to be talked to in a special tone so as not to exasperate a situation. He barely passed 8th grade and failed 9th grade. My son was placed in Alternative School. The CST denied my first request for an IEP, said that he is smart and does not have a disability, I beg to differ. I am initiating a second IEP meeting and want legal advise or even a lawyer present. My son would benefit from a detailed IEP.