Unlikely, at least not in a clinically useful manner. A disease is a disease, one of the strongest arguments against the "high functioning" part of the autism spectrum these days is that these people don't seem to exhibit much if any of the comorbidity syndromes prevalent to autism especially the physiological one.
The lower you go on the spectrum the higher the chances for comorbidity for a lot of other conditions, mitochondrial and metabolic syndrome, fragile x chromosome, gastrointestinal diseases and many many more horrific things.
For example the reason why many people who suffer from autism would require diapers after being potty trained isn't because of MR or any other intellectual disability but because they are more likely to suffer from encopresis which leads to fecal leakage.
It also doesn't help that the image of autism was changed from kids that would require tremendous support for the rest of their life to SV engineers making 500K a year that can't seem to be able to not be a jerk or are too introverted.
As an anecdotal evidence I managed to get myself diagnosed on the spectrum in the UK I went to an official diagnosis center and had sessions with an "occupational therapist", at no point have I ever seen a doctor not to mention a neurologist.
As morbid as it sound I have that framed just by my ordained minister license which I got despite being Jewish.
If ASD has a single or a subset of related underlying genetic causes then it's a single disease, and if these causes are present both in high functioning and low functioning autistic individual then it is truly a single condition, however it is still a disease just like relapsing MS is a disease even if it never fully flares out.
That said however I have a strong feeling that the more we understand the epidemiology of ASD the more likely we'll find out that it's much more likely a group of distinct diseases with different causes. And some might not even be classified as a condition anymore.