To amend title XVIII of the Social Security Act to establish a full risk ACO program.
HB8129 would amend Title XVIII of the Social Security Act to create a permanent full-risk accountable care organization (ACO) program for Traditional Medicare. The bill directs the Secretary of Health and Human Services to establish the program by June 30, 2026, and to offer two participation tracks: a standard full-risk ACO and a complex care full-risk ACO focused on beneficiaries with multiple chronic conditions. Participating ACOs would coordinate care for Medicare fee-for-service beneficiaries through advanced primary care, care coordination, behavioral health, social supports, in-home care, palliative care, and other services, with flexibility to use non-visit-based care such as email, text, phone, and video.
The bill would add a new Section 1899B to the Social Security Act and expand Medicare payment policy by authorizing full capitation, primary care capitation, claims-reduction arrangements, and other population-based payment models for ACOs. It would also require new benchmark, risk adjustment, data-sharing, quality reporting, beneficiary communication, and waiver authorities, while exempting participants from MIPS and treating them as advanced alternative payment models under MACRA. The practical effect would be to give providers in Traditional Medicare a permanent pathway to assume full financial risk in exchange for greater flexibility and potential shared savings, affecting hospitals, physician groups, rural health clinics, FQHCs, critical access hospitals, and other provider organizations that join ACOs.
The bill text reflects a strongly supportive policy stance toward value-based care, emphasizing that prior pilots have improved outcomes and lowered costs and that permanent full-risk options are needed in Traditional Medicare. Because there were no recorded committee transcripts or votes in the provided material, there is no direct evidence of opposition or amendment debate in the available record. The overall sentiment from the bill itself is pro-ACO, pro-capitation, and pro-care coordination, with an emphasis on reducing clinician burden and improving beneficiary experience.
The main policy tensions are likely to center on the degree of financial risk imposed on providers, the use of capitated payments in Medicare, and how benchmarks and risk adjustment are set. Providers may differ on whether the standard and complex-care tracks are workable, especially smaller or rural organizations that may face challenges meeting minimum beneficiary thresholds or securing financial guarantees. Potential concerns also include beneficiary protections, the scope of CMS waiver authority, the exemption from MIPS, and whether the program could shift too much downside risk to participating organizations or create incentives to stint on care.