1. Short title This Act may be cited as the Primary Care Enhancement Act of 2018 . 2. Treatment of direct primary care service arrangements (a) In general Section 223(c)(1) of the Internal Revenue Code of 1986 is amended by adding at the end the following new subparagraph: (D) Treatment of direct primary care service arrangements (i) In general A direct primary care service arrangement shall not be treated as a health plan for purposes of subparagraph (A)(ii). (ii) Direct primary care service arrangement For purposes of this paragraph— (I) In general The term direct primary care service arrangement means, with respect to any individual, an arrangement under which such individual is provided medical care (as defined in section 213(d)) consisting solely of primary care services (as defined in section 1833(x)(2)(B) of the Social Security Act) provided by primary care practitioners (as defined in section 1833(x)(2)(A) of the Social Security Act, determined without regard to clause (ii) thereof), if the sole compensation for such care is a fixed periodic fee. (II) Limitation With respect to any individual for any month, such term shall not include any arrangement if the aggregate fees for all direct primary care service arrangements (determined without regard to this subclause) with respect to such individual for such month exceed $150 (twice such dollar amount in the case of an individual with any direct primary care service arrangement (as so determined) that covers more than one individual). (iii) Certain services specifically excluded from treatment as primary care services For purposes of this paragraph, the term primary care services shall not include— (I) procedures that require the use of general anesthesia, (II) prescription drugs (other than vaccines), and (III) laboratory services not typically administered in an ambulatory primary care setting. The Secretary, after consultation with the Secretary of Health and Human Services, shall issue regulations or other guidance regarding the application of this