Are preexisting conditions covered? Crystal November 30, 2022 19:51 Updated Yes. There is no preexisting condition exclusion for anyone of any age, and no proof of creditable coverage is required. Related articles What dependents are eligible and what required documentation do I need to submit for verification when adding a dependent? My child is about to turn 26, what do I need to do to remove him or her from coverage? How do I add a new dependent (adoption or legal custody due to the anticipation of adoption) to my State Group Insurance Program coverage? Where can I find coordination of benefits examples? Do I have to make changes during Annual Enrollment?