; (2) by striking Each such and inserting the following: (A) In general Except as provided in subparagraph (B), each such ; and (3) by adding at the end the following new subparagraph: (B) Limitation (i) In general With respect to the classification of an individual entitled to benefits under part A or enrolled under part B, or both, as an inpatient or an outpatient for purposes of hospital claims for payment for items or services furnished to such individual under this title, such contracts shall provide that a recovery audit contractor shall only send additional documentation requests related to the appropriateness of such classification in the first 6 months after the date on which such items or services were furnished. (ii) Exception The limitation described in clause (i) shall not apply where a claim for payment is submitted more than 3 months after the date on which such items or services were furnished. . (b) Study on shortening the audit and recovery period for other reviews (1) Study The Secretary of Health and Human Services shall conduct a study to assess— (A) the potential burden on providers of services (as defined in subsection (u) of section 1861 of the Social Security Act ( 42 U.S.C. 1395x )) and suppliers (as defined in subsection (d) of such section) under the Medicare program of the audit and recovery period applicable to audit and recovery activities conducted by recovery audit contractors under section 1893(h)(4) of such Act ( 42 U.S.C. 1395ddd(h)(4) )