April 22, 2015
Distinct Procedural Services Modifiers
The following resources describe the policies related to billing modifiers for distinct procedural services (HCPCS modifiers 59 and X{EPSU}). Any additional instructions and/or clarifications received from CMS will be included in this document and on the CGS website as they are received.
- CMS "Modifier 59 Article"
- CMS NCCI web page
- CMS MLN "How to Use the Medicare NCCI Tools" booklet
- CMS MLN Matters article SE1418, "Proper Use of Modifier 59"
- CMS MLN Matters article MM8863, "Specific Modifiers for Distinct Procedural Services"
- CMS MLN Matters article SE1503, "Continued Use of Modifier 59 after January 1, 2015"
- CGS Part A Modifier Finder Tool