setting. The Secretary, after consultation with the Secretary of Health and Human Services, shall issue regulations or other guidance regarding the application of this clause. . (b) Direct primary care service arrangement fees treated as medical expenses Section 223(d)(2)(C) is amended by striking or at the end of clause (iii), by striking the period at the end of clause (iv) and inserting , or , and by adding at the end the following new clause: (v) any direct primary care service arrangement. . (c) Inflation adjustment Section 223(g)(1) of such Code is amended— (1) by striking and (c)(2)(A) and inserting , (c)(1)(D)(ii)(II), and (c)(2)(A) , and (2) in subparagraph (B), by striking clause (ii) and inserting clauses (ii) and (iii) in clause (i), by striking and at the end of clause (i), by striking the period at the end of clause (ii) and inserting , and , and by inserting after clause (ii) the following new clause: (iii) in the case of the dollar amount in subsection (c)(1)(D)(ii)(II) for taxable years beginning in calendar years after 2019, calendar year 2018 . . (d) Reporting of direct primary care service arrangement fees on W–2 Section 6051(a) of such Code is amended by striking and at the end of paragraph (16), by striking the period at the end of paragraph (17) and inserting , and , and by inserting after paragraph (17) the following new paragraph: . (18) in the case of a direct primary care service arrangement (as defined in section 223(c)(1)(D)(ii)) which is provided in connection with employment, the aggregate fees for such arrangement for such employee. . (e) Effective date The amendments made by this subsection shall apply to months beginning after December 31, 2018, in taxable years ending after such date.