; and (B) which are furnished to individuals for the purpose of evaluating immunologic response to certain antigens, as determined appropriate by the practitioner ordering such test. (2) Equal access to testing methods The Secretary shall ensure equality in the treatment of in vitro specific IgE tests and percutaneous tests described in paragraph (1) with respect to— (A) any medical necessity or other coverage requirements established for such in vitro specific IgE and percutaneous tests; (B) any frequency limits established for such tests; and (C) any allergen unit limits established for a year for such tests. . (b) Payment Section 1834 of the Social Security Act ( 42 U.S.C. 1395m ) is amended by adding at the end the following new subsection: (v) Allergy diagnostic testing services For purposes of payment only, in the case of allergy diagnostic testing services (as defined in section 1861(jjj))— (1) in vitro specific IgE tests shall be treated as clinical diagnostic laboratory tests; and (2) percutaneous tests shall be treated as physicians’ services. . (c) Effective date The amendments made by this section shall apply with respect to items and services furnished on or after January 1, 2019.