45 C.F.R. § 156.1256
Link to an amendment published at 81 FR 94183, Dec. 22, 2016.
As directed by the FFE, a health insurance issuer that is offering QHP coverage through an FFE or an SBE-FP must notify its enrollees of material plan or benefit display errors and the enrollees' eligibility for a special enrollment period, included in § 155.420(d)(4) of this subchapter, within 30 calendar days after being notified by the FFE that the error has been fixed, if directed to do so by the FFE.
[81 FR 12352, Mar. 8, 2016]