38 CFR §1.918

1. (a)When attempting to locate a debtor in order to compromise or collect a debt in accordance with §§ 1.900 through 1.953, VA may send a request to the Secretary of the Treasury, or his/her designee, in order to obtain the debtor's most current mailing address from the records of the Internal Revenue Service.
2. (b)VA is authorized to use mailing addresses obtained under paragraph (a) of this section to enforce collection of a delinquent debt and may disclose such mailing addresses to other agencies and to collection agencies for collection purposes.