5 C.F.R. § 838.735 Cost-of-living adjustments.
Title 5 - Administrative Personnel
(a) OPM applies cost-of-living adjustments to all former spouse survivor annuities in pay status at the time of the adjustment and in the amount provided by Federal statute. (b) OPM will not honor provisions of a court order that alters the time or amount of cost-of-living adjustments or that attempts to prevent OPM from applying cost-of-living adjustments to a former spouse survivor annuity in pay status.
Title 5: Administrative Personnel
PART 838—COURT ORDERS AFFECTING RETIREMENT BENEFITS
Subpart G—Procedures for Processing Court Orders Awarding Former Spouse Survivor Annuities
Payment Procedures
§ 838.735 Cost-of-living adjustments.