TRICARE Reimbursement Manual 6010.64-M, April 2021, Change 5001 (Dec 16, 2021) Published Change Revisions Made To Clarify Requirements Published Date: December 16, 2021 CONREQ:None Implementation Date:December 16, 2021 This change is made in conjunction with TRICARE Operations Manual 6010.62-M, April 2021, Change 5003. Summary of Changes:Revised in its entirety.Effective Date:December 16, 2021 Affected Sections: Chap 18 Sect 1 -- Alternate Payment Models (APMs)