The amendment made by this section shall apply to taxable years beginning after the date of the enactment of this Act. 202. Provisions relating to Medicare (a) Individuals over age 65 only enrolled in Medicare Part A Paragraph (7) of section 223(b) is amended by adding at the end the following: This paragraph shall not apply to any individual during any period for which the individual's only entitlement to such benefits is an entitlement to hospital insurance benefits under part A of title XVIII of such Act pursuant to an enrollment for such hospital insurance benefits under section 226(a) of such Act. . (b) Medicare beneficiaries participating in Medicare advantage MSA may contribute their own money to their MSA Subsection (b) of section 138 is amended by striking paragraph (2) and by redesignating paragraphs (3) and (4) as paragraphs (2) and (3), respectively. (c) Effective date The amendments made by this section shall apply to taxable years beginning after the date of the enactment of this Act. 203. Individuals eligible for Indian Health Service assistance (a) In general Paragraph (1) of section 223(c) is amended by adding at the end the following new subparagraph: (E) Special rule for individuals eligible for assistance under Indian Health Service programs For purposes of subparagraph (A)(ii), an individual shall not be treated as covered under a health plan described in such subparagraph merely because the individual receives hospital care or medical services under a medical care program of the Indian Health Service or of a tribal organization. . (b) Effective date The amendment made by this section shall apply to taxable years beginning after the date of the enactment of this Act. 204. Members of health care sharing ministries eligible to establish health savings accounts (a) In general Section 223 is amended by adding at the end the following new subsection: (i) Application to health care sharing ministries For purposes of this section, membership in a health care sharing ministry (as defined in section