Medicare program; changes to Medicare payment for drugs and physician fee schedule payments for calendar year 2004. Interim final rule with comment period.

This interim final rule implements the provisions of the Medicare Prescription Drug, Improvement, and Modernization Act (MPDIMA) of 2003, Pub. L. 108-173, which are applicable in 2004 to Medicare payment for covered drugs and physician fee schedule services. These provisions revise the current payment methodology for Part B covered drugs and biologicals that are not paid on a cost or prospective payment basis; make changes to Medicare payment for furnishing or administering drugs and biologicals; revise the geographic practice cost indices and change the physician fee schedule conversion factor. The 2004 physician fee schedule conversion factor will be $37.3374. The 2004 national anesthesia conversion factor (prior to making adjustment for the geographic practice cost indices) will be $17.4969. The information contained in this final rule related to payment under the physician fee schedule supercedes the information contained in the November 7, 2003, final rule to the extent that the two are inconsistent. All other provisions of the November 7, 2003, final rule are unchanged unless otherwise noted. This rule also extends the "opt-out" provisions of 1802(b)(5)(3) of the Social Security Act to dentists, podiatrists, and optometrists.