45 C.F.R. § 800.111 – Accreditation requirement.

(a) General requirement. An MSP issuer must be or become accredited consistent with the requirements for QHP issuers specified in section 1311 of the Affordable Care Act and 45 CFR 156.275(a)(1).
(b) Release of survey. An MSP issuer must authorize the accrediting entity that accredits the MSP issuer to release to OPM and to the Exchange a copy of its most recent accreditation survey, together with any survey-related information that OPM or an Exchange may require, such as corrective action plans and summaries of findings.
(c) Timeframe for accreditation. An MSP issuer that is not accredited as of the date that it enters into a contract with OPM must become accredited within the timeframe established by OPM as authorized by 45 CFR 155.1045.