of Health and Human Services shall revise sections 162.408 and 162.410 of title 45, Code of Federal Regulations, to ensure that each off-campus outpatient department of a provider (as defined in section 1833(t)(21)(B) of the Social Security Act ( 42 U.S.C. 1395l(t)(21)(B) )) is treated as a subpart (as described in such sections) of such provider and assigned a unique health identifier pursuant to section 1173(b)(3) of such Act (as added by paragraph (1)). (c) Off-Campus departments of a provider billing requirements (1) Medicare Section 1866(a)(1) of the Social Security Act ( 42 U.S.C. 1395cc(a)(1) ) is amended— (A) in subparagraph (X), by striking and at the end