CFR › Title 42 › Part 425 › §425.22042 CFR §425.220Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Notice of termination. An ACO must provide at least 30 days advance written notice to CMS and its ACO participants of its decision to terminate the participation agreement and the effective date of its termination.(b)[Reserved]