42 C.F.R. § 425.612
(a) General. CMS may waive certain payment rules or other Medicare requirements as determined necessary to carry out the Shared Savings Program under this part.
(1) SNF 3-day rule. For performance year 2017 and subsequent performance years, CMS waives the requirement in section 1861(i) of the Act for a 3-day inpatient hospital stay prior to a Medicare-covered post-hospital extended care service for eligible beneficiaries assigned to ACOs participating in a two-sided model and as provided in paragraph (a)(1)(iv) of this section during a grace period for beneficiaries excluded from prospective assignment to an ACO in a two-sided model, who receive otherwise covered post-hospital extended care services furnished by an eligible SNF that has entered into a written agreement to partner with the ACO for purposes of this waiver. Eligible SNFs include providers furnishing SNF services under swing bed agreements. All other provisions of the statute and regulations regarding Medicare Part A post-hospital extended care services continue to apply. ACOs identified under paragraph (a)(1)(vi) of this section may request to use the SNF 3-day rule waiver for performance years beginning on July 1, 2019, and in subsequent years.
(i) ACOs must submit to CMS supplemental application information sufficient to demonstrate the ACO has the capacity to identify and manage beneficiaries who would be either directly admitted to a SNF or admitted to a SNF after an inpatient hospitalization of fewer than 3-days in the form and manner specified by CMS. Application materials include but are not limited to, the following:
(A) An attestation that it has established and will make available to CMS upon request the following narratives describing how the ACO plans to implement the waiver:
(1) A communication plan between the ACO and its SNF affiliates.
(2) A care management plan for beneficiaries admitted to a SNF affiliate.
(3) A beneficiary evaluation and admission plan approved by the ACO medical director and the healthcare professional responsible for the ACO's quality improvement and assurance processes under § 425.112.
(B) (1) A list of SNFs, including the Medicare-enrolled TIN and the CCN, with whom the ACO will partner along with executed written SNF affiliate agreements between the ACO and each listed SNF.
(2) An ACO must notify CMS no later than 30 days after the change of ownership of a SNF affiliate, identified in accordance with paragraph (a)(1)(i)(B)(1) of this section, that has resulted in a change to the Medicare enrolled TIN of the SNF affiliate. Such notice and supporting documentation must be submitted in the form and manner specified by CMS.
(ii) In order to be eligible to receive covered SNF services under the waiver, a beneficiary must meet the following requirements:
(iii) SNFs eligible to partner and enter into written agreements with ACOs for purposes of this waiver must do the following:
(B) Sign a SNF affiliate agreement with the ACO that includes elements determined by CMS including but not limited to the following:
(1) Agreement to comply with the requirements and conditions of this part, including but not limited to those specified in the participation agreement with CMS.
(2) Effective dates of the SNF affiliate agreement.
(3) Agreement to implement and comply with the ACO's beneficiary evaluation and admission plan and the care management plan.
(4) Agreement to validate the eligibility of a beneficiary to receive covered SNF services in accordance with the waiver prior to admission.
(5) Remedial processes and penalties that will apply for non-compliance.
(iv) For a beneficiary who was included on the ACO's prospective assignment list or preliminary prospective assignment list at the beginning of the performance year or on the first, second, or third quarterly preliminary prospective assignment list for the performance year, for an ACO for which a waiver of the SNF 3-day rule has been approved under paragraph (a)(1) of this section, but who was subsequently removed from the assignment list for the performance year, CMS makes payment for SNF services furnished to the beneficiary by a SNF affiliate if the following conditions are met:
(A) (1) The beneficiary was prospectively assigned to an ACO that selected prospective assignment under § 425.400(a)(3) at the beginning of the applicable performance year, but was excluded in the most recent quarterly update to the assignment list under § 425.401(b), and the beneficiary was admitted to a SNF affiliate within 90 days following the date that CMS delivered the quarterly exclusion list to the ACO; or
(2) The beneficiary was identified as preliminarily prospectively assigned to an ACO that has selected preliminary prospective assignment with retrospective reconciliation under § 425.400(a)(2) in the report provided under § 425.702(c)(1)(ii)(A) at the beginning of the performance year or for the first, second, or third quarter of the performance year, the SNF services were provided after the beneficiary first appeared on the preliminary prospective assignment list for the performance year, and the beneficiary meets the criteria to be assigned to an ACO under § 425.401(a)(1) and (2).
(v) The following beneficiary protections apply when a beneficiary receives SNF services without a prior 3-day inpatient hospital stay from a SNF affiliate that intended to provide services under a SNF 3-day rule waiver under paragraph (a)(1) of this section, the SNF affiliate services were non-covered only because the SNF affiliate stay was not preceded by a qualifying hospital stay under section 1861(i) of the Act, and in the case of a beneficiary where the ACO selected one of the following:
(E) In the event that CMS makes no payment for SNF services furnished by a SNF affiliate as a result of paragraph (a)(1)(v)(D) of this section and the only reason the claim was non-covered is due to the lack of a qualifying inpatient stay, the following beneficiary protections will apply:
(1) The SNF must not charge the beneficiary for the expenses incurred for such services; and
(2) The SNF must return to the beneficiary any monies collected for such services; and
(3) The ACO may be required to submit a corrective action plan under § 425.216(b) for CMS approval. If after being given an opportunity to act upon the corrective action plan the ACO fails to come into compliance with the requirements of paragraph (a)(1), approval for the SNF 3-day rule waiver under this section will be terminated as provided under paragraph (d) of this section.
(vi) The following ACOs may request to use the SNF 3-day rule waiver:
(b) Review and determination of request to use waivers.
(3) CMS evaluates an ACO's waiver request to determine whether it satisfies the requirements of this part and approves or denies waiver requests accordingly. Waiver requests are approved or denied on the basis of the following:
(c) Effective and termination date of waivers.
(d) Monitoring and termination of waivers.
(3) CMS reserves the right to deny or revoke a waiver if an ACO, its ACO participants, ACO providers/suppliers or other individuals or entities providing services to Medicare beneficiaries are not in compliance with the requirements of this part or if any of the following occur:
(e) Other rules governing use of waivers.
(f) Waiver for payment for telehealth services. For performance year 2020 and subsequent performance years, CMS waives the originating site requirements in section 1834(m)(4)(C)(i) and (ii) of the Act and makes payment for telehealth services furnished to a beneficiary, if the following conditions are met:
[80 FR 32843, June 9, 2015, as amended at 81 FR 80561, Nov. 15, 2016; 82 FR 53371, Nov. 15, 2017; 83 FR 68080, Dec. 31, 2018; 84 FR 63204, Nov. 15, 2019; 87 FR 70242, Nov. 18, 2022; 90 FR 50020, Nov. 5, 2025]