Health benefits coverage provided under section 1397aa(a)(1) of this title (and coverage provided under a waiver under section 1397ee(c)(2)(B) of this title) shall be treated as creditable coverage for purposes of part 7 of subtitle B of title I of the Employee Retirement Income Security Act of 1974 [29 U.S.C. 1181 et seq.], title XXVII of the Public Health Service Act [42 U.S.C. 300gg et seq.], and subtitle K of the Internal Revenue Code of 1986.

Nothing in this subchapter shall be construed as affecting or modifying section 514 of the Employee Retirement Income Security Act of 1974 (29 U.S.C. 1144) with respect to a group health plan (as defined in section 2791(a)(1) of the Public Health Service Act (42 U.S.C. 300gg–91(a)(1))).