Yes, you can claim him on your taxes if he meets the requirements for qualifying child:
https://ttlc.intuit.com/replies/5187060
Please see these filing requirements for dependents to see if your son needs to file a return:
https://ttlc.intuit.com/replies/3302185
If he qualifies to be your dependent and has to file a return, please make sure he on the return that he marks on the return that he can be claimed as a dependent.
