CMS is capping the additional documentation requests that Recovery Audit Contractors (RACs) can make of DME suppliers in FY 2011. While limits generally are set at 10% of claims submitted for the previous full calendar year, divided into 45 day periods, CMS is capping the additional document requests at 250 per 45 days for all suppliers in fiscal year 2011. While RACs may submit requests to exceed the cap, such requests will require case-by-case approval from CMS.