The Centers for Medicare and Medicaid Services (CMS) recently posted the following note on its website related to use of the supplementary security income (SSI) ratios used for disproportionate share hospital (DSH) calculation purposes:

Note to Providers:
CMS is currently in the process of reviewing the FY 2006 SSI ratios. Since the FY 2006 SSI ratios are currently under review, as of May 5, 2008, a hospital may elect to use either its FY 2005 or its FY 2006 SSI ratio from the files published below for submission of its cost report that would otherwise be submitted with the FY 2006 SSI ratio. While a hospital has the option of submitting its cost report using either its FY 2005 or FY 2006 SSI ratio, once CMS has completed its review of the FY 2006 SSI ratios, such cost reports will be settled using the appropriate SSI ratios. This option does not affect future cost reporting periods and SSI ratios (i.e, once the FY 2007 SSI ratios are published on this website, a hospital must use its FY 2007 SSI ratio for applicable cost reporting periods). If a hospital has already submitted its cost report using its FY 2006 ratio and would like to use its FY 2005 SSI ratio instead, it should contact its Fiscal Intermediary or Medicare Administrative Contractor.

http://www.cms.hhs.gov/acuteinpatientpps/05_dsh.asp