(2) Not counting periods before significant breaks in coverage (A) In general A period of creditable coverage shall not be counted, with respect to enrollment of an individual under a group health plan, if, after such period and before the enrollment date, there was a 63-day period during all of which the individual was not covered under any creditable coverage. (B) Waiting period not treated as a break in coverage For purposes of subparagraph (A) and subsection (d)(4), any period that an individual is in a waiting period for any coverage under a group health plan or is in an affiliation period shall not be taken into account in determining the continuous period under subparagraph (A). (C) Affiliation period (i) In general For purposes of this section, the term “affiliation period” means a period which, under the terms of the health insurance coverage offered by the health maintenance organization, must expire before the health insurance coverage becomes effective. During such an affiliation period, the organization is not required to provide health care services or benefits and no premium shall be charged to the participant or beneficiary. (ii) Beginning Such period shall begin on the enrollment date. (iii) Runs concurrently with waiting periods Any such affiliation period shall run concurrently with any waiting period under the plan. (D) TAA-eligible individuals In the case of plan years beginning before January 1, 2014 — (i) TAA pre-certification period rule In the case of a TAA-eligible individual, the period beginning on the date the individual has a TAA-related loss of coverage and ending on the date which is 7 days after the date of the issuance by the Secretary (or by any person or entity designated by the Secretary) of a qualified health insurance costs credit eligibility certificate for such individual for purposes of section 7527 shall not be taken into account in determining the continuous period under subparagraph (A). (ii) Definitions The terms “TAA-eligible individual” and “TAA-related loss of coverage” have the meanings given such terms in section 4980B(f)(5)(C)(iv).