4. Terms of coverage for medical expense plans What's In and What's Out? Persons covered Under the Affordable Care Act (ACA) of 2010, young adults can remain on their parents' insurance until they are Cancellation Under the ACA the insurer plan, you renew your coverage Pre-existing conditions drawbacks -year-old. cancel your coverage if you get sick or make an honest mistake on your application. If you are in a group One of the of the Affordable Care Act is that, beginning in 2014, it, existing conditions. This provision is called the exclusion from coverage for individuals with pre- Continuation of group coverage In most cases, this provision allows you to remain covered under your former employer's group plan for up to as you to an individual policy. In most states, after COBRA expires, you months after termination, as long the opportunity to convert the group policy