1. Short title This Act may be cited as the Laboratory Access for Beneficiaries Act or the LAB Act . 2. Amendments relating to reporting requirements with respect to clinical diagnostic laboratory tests (a) Revised reporting period for reporting of private sector payment rates for establishment of Medicare payment rates Section 1834A(a) of the Social Security Act ( 42 U.S.C. 1395m–1(a) ) is amended— (1) in paragraph (1)— (A) by striking Beginning January 1, 2016 and inserting the following: (A) General reporting requirements Subject to subparagraph (B), beginning January 1, 2016 ; (B) in subparagraph (A), as added by subparagraph (A) of this paragraph, by inserting (referred to in this subsection as the reporting period ) after at a time specified by the Secretary ; and (C) by adding at the end the following: (B) Revised reporting period In the case of reporting with respect to clinical diagnostic laboratory tests that are not advanced diagnostic laboratory tests, the Secretary shall revise the reporting period under subparagraph (A) such that— (i) no reporting is required during the period beginning January 1, 2020, and ending December 31, 2020; (ii) reporting is required during the period beginning January 1, 2021, and ending March 31, 2021; and (iii) reporting is required every three years after the period described in clause (ii). ; and (2) in paragraph (4)— (A) by striking In this section and inserting the following: (A) In general Subject to subparagraph (B), in this section