It depends. Certain pre-existing medical conditions may lead to service exemption. The IDF decides whether to draft you based on your preliminary health screening at your Tzav Rishon ( צו ראשון) First Draft Notice. At this time, you will receive a numeric value referred to as your “profile number.” A service candidate with a numeric profile value of 21 or 24 is dismissed from service. Learn more about the IDF profile number.