2006 proposed fee schedule - American Society of Clinical Oncology

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beginning in 2003 as “a geographic entity associated with at
least one core of 10,000 or more population, plus adjacent
territory that has a high degree of social and economic
integration with the core as measured by commuting ties.”
The standards designate and define two categories of CBSAs:
MSAs and Micropolitan Statistical Areas (65 FR 82235).
According to OMB, MSAs are based on urbanized areas of
50,000 or more population, and Micropolitan Statistical
Areas (referred to hereafter as Micropolitan Areas) are
based on urban clusters with at least 10,000, but less than
50,000 population. Counties that do not fall within CBSAs
are deemed “Outside CBSAs”. Previously OMB defined MSAs
around areas with a minimum core population of 50,000, and
smaller areas were “Outside MSAs”. On June 6, 2003 OMB
announced the new CBSAs, consisting of MSAs and the new
Micropolitan Areas based on the results of the 2000 Census.
d. Adoption of MSAs as Urban Areas for Composite Payments
In its June 6, 2003 announcement, OMB cautioned that
its new metropolitan area definitions “should not be used to
develop and implement Federal, State, and local
nonstatistical programs and policies without full
consideration of the effects of using these definitions for
these purposes. These areas should not serve as a general
purpose geographic framework for nonstatistical activities,