To amend section 1848 of the Social Security Act to provide for a 4-year transition in reductions in relative value units for certain newly bundled services to allow physician practice time to adjust to new payment rates.

Amends title XVIII (Medicare) of the Social Security Act to revise requirements for determining the relative value of physicians' services for fee payment purposes.

Directs the Secretary of Health and Human Services (HHS) to provide for a 4-year transition applicable in the case of codes (for services) for which: (1) a single code is used for payment for services for which multiple codes were previously used; and (2) a change in relative value units results in a reduction in such units of 10% or more. Applies this 4-year transition to the number of percentage points of the reduction in excess of 10%.