42 C.F.R. § 423.168
(a) Conditions for approval. CMS may approve an accreditation organization for a given standard under this part if the organization meets the following conditions:
(3) It ensures that—
(b) Notice and comment—(1) Proposed notice. CMS publishes a notice in the Federal Register whenever it is considering granting an accreditation organization's application for approval. The notice-
(2) Final notice.
(c) Ongoing responsibilities of an approved accreditation organization. An accreditation organization approved by CMS must undertake the following activities on an ongoing basis:
(1) Provide to CMS in written form and on a monthly basis all of the following:
(2) Within 30 days of a change in CMS requirements, submit the following to CMS—
(d) Continuing Federal oversight of approved accreditation organizations. Specific criteria and procedures for continuing oversight and for withdrawing approval of an accreditation organization include the following:
(1) Equivalency review. CMS compares the accreditation organization's standards and its application and enforcement of those standards to the comparable CMS requirements and processes when—
(2) Validation review. CMS or its agent may conduct a survey of an accredited organization, examine the results of the accreditation organization's own survey, or attend the accreditation organization's survey to validate the organization's accreditation process. At the conclusion of the review, CMS identifies any accreditation programs for which validation survey results indicate—
(3) Onsite observation. CMS may conduct an onsite inspection of the accreditation organization's operations and offices to verify the organization's representations and assess the organization's compliance with its own policies and procedures. The onsite inspection may include, but is not limited to the following:
(5) Withdrawal of approval. CMS may withdraw its approval of an accreditation organization at any time if CMS determines that—