Amends Federal civil service law to provide for the indexation of deferred annuities, including survivor annuities, under the Civil Service Retirement System (CSRS), Federal Employees' Retirement System (FERS), and for individuals becoming subject to FERS by election.Terminates for remarriage before age 55 (currently remarriage at any age) a survivor's entitlement to an annuity based on the service of a deferred annuitant who dies before establishing a valid claim for annuity under CSRS (conforms with requirements under FERS).