Urban Medicare-Dependent Hospitals Preservation Act of 2009 - Amends title XVIII (Medicare) of the Social Security Act, with respect to cost reporting periods beginning on or after October 1, 2009, to revise the criteria and payment formula for "subsection (d) hospitals" which are urban Medicare-dependent hospitals.
(Generally a subsection (d) hospital is an acute care hospital, particularly one that receives payment under Medicare's inpatient prospective payment system (IPPS) when providing covered inpatient services to eligible beneficiaries.)