The list below shows the transmittals that are directed to the ASC provider community, but the list may not include all instructions for which ASC providers are responsible. For a list of all instructions, view the Transmittals web page under Regulations and Guidance.
| 6629 | 08/28/2009 | October 2009 Update to the Ambulatory Surgical Center Payment System; Summary of Payment Policy Changes | MM6629 |
| 6630 | 08/28/2009 | Ambulatory Surgical Center Payment Indicator File Error; and Reiteration of CMS Policy Regarding Beneficiary Liability for V2787 and V2788 | MM6630 |
| 6496 | 06/19/2009 | July 2009 Update to the ASC Payment System; Summary of Payment Policy Changes | MM6496 |
| 6470 | 06/12/2009 | Reassignment and Ambulatory Surgical Centers | 6470 |
| 6358 | 05/29/2009 | Processing and Payment of Physician and Non-Physician Practioner Services Reassigned to ASCs | MM6358 |
| 6424 | 03/13/2009 | April 2009 Update to the ASC Payment System; Summary of Payment Policy Changes/Manual Revisions | MM6424 |
| 6323 | 01/13/2009 | January 2009 Update of the Ambulatory Surgical Center (ASC) Payment System | MM6323 |
| 6184 | 10/17/2008 | Implementation of an ASC HCPCS Payment Indicator File | MM6184 |
| 6205 | 10/03/2008 | October 2008 Update to the Ambulatory Surgical Center Payment System; Summary of Payment Policy Changes | MM6205 |
| 6052 | 09/26/2008 | Physician Payment Amounts When Physicians Furnish Excluded Procedures in Ambulatory Surgical Centers | MM6052 |