Medicare Shared Savings Program Shared Savings and Losses and Assignment Methodology

Centers for Medicare and Medicaid Services (CMS)

Reference the Medicare Shared Savings Program's (MSSP) financial and beneficiary assignment specifications for detailed information on how the MSSP assigns beneficiaries to each accountable care organization (ACO) and calculates a historical financial benchmark from which to assess annual financial performance, and ultimately, eligibility for an earned shared savings payment.

This project is/was supported by the Health Resources and Services Administration (HRSA) of the U.S. Department of Health and Human Services (HHS) under grant number UB1RH24206, Information Services to Rural Hospital Flexibility Program Grantees, $1,009,121 (0% financed with nongovernmental sources). This information or content and conclusions are those of the author and should not be construed as the official position or policy of, nor should any endorsements be inferred by HRSA, HHS or the U.S. Government.