Institutional billing resources (Addendums A, B, D1 and E*)

Addendum A - APC groups and OPPS payment rates 

  • After clicking on the hyperlink above, choose the appropriate Release Date from the options listed.
  • Then on the "Details for title: Month 20XX" page, click on Addendum A under Related Links.
  • After you choose Accept and open, a box will appear with all the addenda available.
  • Choose either version of Addendum A (.xlsx or .csv) and the file will open. 

Addendum B - HCPCS codes and their status indicators 

  • After clicking on the hyperlink above, choose the appropriate Release Date from the options listed.
  • Then on the "Details for title: Month 20XX" page, click on Addendum B under Related Links.
  • After you choose Accept and open, a box will appear with all the addenda available.
  • Choose either version of Addendum B (.xlsx or .csv) and the file will open.

Addendum D1 - Payment status indicators for the Hospital Outpatient Prospective Payment System 

  • After clicking on the hyperlink above, choose the Regulation number for the appropriate Final Rulemaking year requested, CMS-xxxx-FC.
  • Scroll to the bottom of the page. Under related links choose “20XX NFRM OPPS Addenda” from the options listed.
  • After you choose Accept and open, a box will appear with all the addenda available.
  • Choose either version of 20XX NFRM addendum D1 (.xlsx or .csv) and the file will open. 

Addendum E - Inpatient only procedure codes 

  • After clicking on the hyperlink above, choose the Regulation number for the appropriate Final Rulemaking year requested, CMS-xxxx-FC.
  • Choose “20XX NFRM OPPS Addenda” from the options listed.
  • After you choose Accept and open, a box will appear with all the addenda available.
  • Choose either version of 20XX NFRM Addendum E (.xlsx or .csv) and the file will open. 

*not all-inclusive list