The list below shows the federal regulations and notices for the Hospital Outpatient Prospective Payment System.
| CMS-1501-FC | Changes to the Hospital Outpatient PPS for Calendar Year 2006 | 2006 |
| CMS-1501-CN2* | Federal Register Editorial Correction to CMS-1501-CN2 | 2006 |
| CMS-1501-CN2 | Medicare Program; Changes to the Hospital Outpatient PPS & C Y 2006 Payment Rate: Correction | 2006 |
| CMS-1501-P | Proposed Changes to the Hospital Outpatient PPS for Calendar Year 2006 | 2006 |
| CMS-1501-CN | Proposed Changes to the Hospital Outpatient PPS and Calendar Year 2006 Payment Rates | 2006 |
| CMS-1427-CN | Changes to the Hospital Outpatient PPS and Calendar Year 2005 Payment Rates | 2005 |
| CMS-1427-FC | Changes to the Hospital Outpatient PPS for Calendar Year 2005 | 2005 |
| CMS-1427-P | Changes to the Hospital Outpatient PPS for Calendar Year 2005 | 2005 |
| CMS-1371-IFC | Hospital Outpatient PPS Payment Reform for Calendar Year 2004 | 2004 |
| CMS-1471-CN | Changes to the Hospital Outpatient PPS and Calendar Year 2004 Payment Rates | 2004 |