As a general rule, the doctor cannot assign a disability rating until the patient reaches "MMI" or maximum medical improvement. So if you are still being treated, an impairment or disability rating is premature. Treatment stops at MMI.
But post in the NY forum so a NY lawyer can answer for you.
This answer is intended as general information and not as specific legal advice. If you want to have a free consultation with me, please contact me through AVVO.