In accordance with regulations of the Secretary, every employee benefit plan shall-
(1) provide adequate notice in writing to any participant or beneficiary whose claim for benefits under the plan has been denied, setting forth the specific reasons for such denial, written in a manner calculated to be understood by the participant, and
(2) afford a reasonable opportunity to any participant whose claim for benefits has been denied for a full and fair review by the appropriate named fiduciary of the decision denying the claim.
(
Secretary authorized, effective Sept. 2, 1974, to promulgate regulations wherever provisions of this subchapter call for the promulgation of regulations, see section 1031 of this title.