WAG 22-04-00.
When unclaimed checks, 
Illinois Link cards, or MediPlan Cards are returned by the post office,
review the case record to see if a change of address was reported. If a change was reported, take all needed actions (i.e., change of address, change of payee, etc.).
If a change of address has not been reported, contact the client by mail or phone to determine why the benefits were returned. Benefits are replaced only after contact has been made and it is determined that the case is eligible for a replacement. If
contact cannot be made with the client, send a timely notice to the client's last known address and cancel the case.
