; and (2) the term postal retail facility means a post office, post office branch, post office classified station, or other facility which is operated by the Postal Service, and the primary function of which is to provide retail postal services, but does not include a contractor-operated facility offering postal services. I Postal Service Benefits Reform 101. Postal Service Health Benefits Program (a) Establishment (1) In general Chapter 89 of title 5, United States Code, is amended by inserting after section 8903b the following: 8903c. Postal Service Health Benefits Program (a) Definitions In this section— (1) the term covered Medicare individual means an individual who is entitled to benefits under part A of title XVIII of the Social Security Act ( 42 U.S.C. 1395c et seq.), but excluding an individual who is eligible to enroll under such part under section 1818 or 1818A of the Social Security Act ( 42 U.S.C. 1395i–2 , 1395i–2a); (2) the term initial contract year means the contract year beginning in January of 2019; (3) the term initial participating carrier means a carrier that enters into a contract with the Office to participate in the Postal Service Health Benefits Program during the initial contract year; (4) the term Office means the Office of Personnel Management; (5) the term Postal Service means the United States Postal Service; (6) the term Postal Service annuitant means an annuitant enrolled in a health benefits plan under this chapter whose Government contribution is paid pursuant to the requirements of section 8906(g)(2); (7) the term Postal Service employee means an employee of the Postal Service enrolled in a health benefits plan under this chapter whose Government contribution is paid by the Postal Service; (8) the term Postal Service Medicare covered annuitant means an individual who— (A) is a Postal Service annuitant; and (B) is a covered Medicare individual