What is a “Q” Code?

"A “Q” code is an Air Force Assignment Limitation Code found within the Military

Personnel Data System (MilPDS) indicating that an active duty Airmen has at least

one (1) dependent"

http://www.afpc.af.mil/Portals/70/documents/Life%20and%20Career/EFMP/Lifetime%20%E2%80%9CQ%E2%80%9D%20Code%20Rumor%20Exposed.pdf?ver=2017-12-12-083123-087