Absolutely, but there is a ton of overlap in presentation with the current diagnoses, so make sure whichever professional is considering the possibility puts a lot of effort into a good differential diagnosis and is not just collecting labels because they look similar.
At the end of the day, the treatment plan or accommodations wouldn’t really change radically with the additional diagnosis if he is being seen by someone who has a good handle on his strengths, challenges, and what does/doesn’t work.