Pub. L. 112-81, div. A, tit. VII, subtit. A, sec. 708
TRANSITION ENROLLMENT OF UNIFORMED SERVICES FAMILY HEALTH PLAN MEDICARE-ELIGIBLE RETIREES TO TRICARE FOR LIFE.
SEC. 708. TRANSITION ENROLLMENT OF UNIFORMED SERVICES FAMILY HEALTH PLAN MEDICARE-ELIGIBLE RETIREES TO TRICARE FOR LIFE. Section 724(e) of the National Defense Authorization Act for Fiscal Year 1997 (Public Law 104–201; 10 U.S.C. 1073 note) is amended—(1) by striking “If a covered beneficiary” and inserting “(1) Except as provided in paragraph (2), if a covered beneficiary”; and(2) by adding at the end the following new paragraph:“(2) After September 30, 2012, a covered beneficiary (other than a beneficiary under section 1079 of title 10, United States Code) who is also entitled to hospital insurance benefits under part A of title XVIII of the Social Security Act due to age may not enroll in the managed care program of a designated provider unless the beneficiary was enrolled in that program on September 30, 2012.”.125 STAT. 1475