Deferred Benefits Adjustment Act of 2013 - Amends federal civil service law to provide for the indexation of deferred annuities, including survivor annuities, under the Civil Service Retirement System (CSRS) and the Federal Employees' Retirement System (FERS) and for individuals becoming subject to FERS by election.
Terminates the entitlement of a survivor who remarries before age 55 (currently, who remarries at any age) to an annuity based on the service of a deferred annuitant who dies before establishing a valid claim for a CSRS annuity.