report is available here (downloadable PDF).
Interpretations differ but most call the program a success citing the high amount recovered and the low amount recovered on appeal.
The Recovery Audit Contractors have recovered more than one billion dollars.
Amounts overturned on appeal were low...
"As of March 27, 2008, providers had chosen to
appeal 14.0 percent of the RAC determinations.
Of all the RAC overpayment determinations, only
4.6 percent were overturned on appeal."
Overpayments by provider type showed that physicians (which include outpatient physical therapists) accounted for only 2.5% of the total overpayments collected.
While some feel that the RAC program is on a 'bounty hunt' the results of this report that, not only are RACs here to stay but that soon they will be in all 50 states.