The list below shows the transmittals that are directed to the Hospital Outpatient provider community, but the list may not include all instructions for which Hospital Outpatient providers are responsible. For a list of all instructions, view the Transmittals web page under Regulations and Guidance.
| 6626 | 08/29/2009 | October 2009 Update of the Hospital Outpatient Prospective Payment System | MM6626 |
| 6618 | 08/28/2009 | October 2009 Integrated Outpatient Code Editor Specifications Version 10.3 | MM6618 |
| 6492 | 06/23/2009 | July 2009 Update of the Hospital Outpatient Prospective Payment System | MM6492 |
| 6492 | 05/22/2009 | July 2009 Update of the Hosptial Outpatient Prospective Payment System | MM6492 |
| 6432 | 04/24/2009 | Fiscal Intermediary Shared System (FISS) Analysis for System Related Outpatient Prospective Payment System (OPPS) Processing Issues | N/A |
| 6416 | 03/13/2009 | April 2009 Update of the Hospital Outpatient Prospective Payment System (OPPS) | MM6416 |
| 6416 | 03/13/2009 | April 2009 Update of the Hospital Outpatient Prospective Payment System | MM6416 |
| 6321 | 02/13/2009 | Outpatient Therapy Caps with Exceptions in CY 2009 | MM6321 |
| 6363 | 02/13/2009 | Corrections to the Inpatient Prospective Payment System Wage Index for Fiscal Year 2009 and the Outpatient Prospective Payment System Wage Index for Calendar Year 2009 | MM6363 |
| 6320 | 01/16/2009 | January 2009 Update of the Hospital Outpatient Prospective Payment System | MM6320 |