AMA CPT® Assistant - 1999 Issue 8 (August)
Appendix F - What does it mean? (August 1999)
August 1999 pages 1-2 Appendix F - What does it mean? Certain codes listed in CPT have not been designated as "add-on" codes; however they are reported without appending the modifier -51, multiple procedures. To help you to understand this, it may be helpful to first review the definition of an add-on code. Procedures described by add-on codes are commonly carried out in addition to the primary procedure performed and are identified in CPT with a "" symbol. These add-on codes are identified with specific descriptor nomenclature such as "each additional" or "(List separately in addition to primary procedure)"...
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Article Overview
This August 1999 CPT Assistant article reviews how CPT Appendix F fits into the broader structure of add-on and modifier-exempt coding guidance. It is relevant to coders, billers, and compliance staff who need to understand the general framework for reporting multiple procedures under CPT and the related Medicare payment context. The article also references how the guidance connects to CPT Appendix E, modifier -51, and RBRVS-era policy changes.
Why This Topic Matters
Understanding this topic helps readers determine whether a code is treated as an add-on or as exempt from modifier -51 reporting, which affects how multiple procedures are recognized in CPT-based claims workflows.
Article Sections
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August 1999 pages 1-2
Introductory material identifying the publication issue and page range.
What You Will Learn
- How CPT Appendix F is positioned within the CPT add-on and modifier-exempt framework
- How the article frames the relationship between Appendix E, Appendix F, and multiple-procedure reporting
- How Medicare payment policy context is discussed alongside CPT modifier guidance
- What general criteria the article says were used to distinguish add-on codes from other CPT codes
Who Should Read This
- Medical coders
- Billing staff
- Compliance professionals
- Practice managers
- Physician office staff
Modifiers Discussed
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