How to change the last name of my already approved VA dependent.

To update your daughter’s last name, you must submit a formal request to the VA with legal proof of the name change, as the adoption and amended birth certificate constitute a new legal status for an already-recognized dependent. The primary mechanism is to complete **VA Form 21-686c**, "Declaration of Status of Dependents," used to *add, remove, or change* dependent information per **38 CFR 3.204** and **3.216**. You must attach a certified copy of the amended birth certificate (and the adoption decree, if separate) as documentary evidence, as required by **38 CFR 3.204(a)(2)** for establishing a child's relationship. For CHAMPVA specifically, you must also submit these documents directly to the CHAMPVA Eligibility Center via mail or fax, as health benefits and compensation benefits are administered separately. Concurrently, ensure her name is updated in the **Defense Enrollment Eligibility Reporting System (DEERS)**, as this can affect CHAMPVA eligibility. Your actionable steps are: 1) Download and fill out VA Form 21-686c, clearly indicating the name change in Section II and providing the adoption details; 2) Gather certified copies of the amended birth certificate and adoption decree; 3) Submit the form and documents to your regional VA benefits office or via VA.gov; 4) Separately send the same proof to the CHAMPVA Eligibility Center (P.O. Box 469023, Denver, CO 80246) or fax to 303-331-7809; 5) Verify DEERS update through the DMDC (1-800-538-9552). Monitor both systems for updates, as processing can take several weeks. *This information is for educational purposes only and does not constitute legal or medical advice; for definitive guidance, consult the VA or an accredited Veterans Service Officer.*