Your child is still covered until age 26. If you are enrolled in an HMO and your child moves out of the HMO's service area, you may change your enrollment to another FEHB plan.
If your stepchild or foster child temporarily lives elsewhere while attending school or for other reasons, the child is still considered to be an eligible family member if he/she is otherwise living with you in a regular parent-child relationship. Your stepchild or foster child who lives with you at least 6 months of a year under a court order directing shared custody may be considered living with you in a regular Parent-Child Relationship.
See our website for more information.