Updates of Addendum A and B are posted quarterly to the OPPS website. These addenda are a "snapshot" of HCPCS codes and their status indicators, APC groups, and OPPS payment rates, that are in effect at the beginning of each quarter. The quarterly updates of Addendum A and Addendum B reflect the OPPS Pricer changes that are part of the quarterly OPPS recurring update notification transmittals.

Sort by: Release Date Ascending Release Date Descending Subject Ascending Subject Descending Year Ascending Year Descending

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Release Date	Subject	Year
April 2004	OPPS release	2004
April 2004	OPPS update, CR3144	2004
April 2004	OPPS update, CR3145	2004
April 2004	OPPS update, CR3154	2004
April 2005	Addendum A	2005
April 2005	Addendum B	2005
April 2005	Table 4b	2005
April 2005	OPPS update, CR3756	2005
April 2005	Additions and Corrections to CMS-1427-FC Addendum B Payment Rates	2005
April 2006	Addendum A	2006

Data Last Updated : 11/23/2009
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