Use Services Online to report the change in your mailing address when you move. If you changed banks because you moved, you should also use Services Online to give the government your new account number and the routing number (found next to your account number on the bottom of your check) for your financial institution. When you change the account you use for direct deposit, keep the old account open until a payment is posted to the new account. This will prevent having the payment returned if there is a problem with the new account. You can also call or write to change your mailing address. If you write, your letter should include your claim number. If you are enrolled in the health benefits program in a plan that serves a limited geographic area, you will need to change plans if you move out of the service area. See the web page at http://www.opm.gov/insure/health/index.asp to view the list of plans from which you can choose and find out how to get brochures for those plans. Once you have picked your new plan, please call to change your enrollment or if you need more help. See the following site for the phone number: http://www.opm.gov/retirement-services/benefits-officers-center/reference-materials/#url=Glossary#I