AMA CPT® Assistant - 2005 Issue 9 (September)
Surgery: Nervous System (September 2005)
September 2005 page 9 Coding Consultation:Questions and Answers Surgery/Nervous System, 64999 (Q&A) Question Is it appropriate to append modifiers to unlisted procedure codes (eg, 64999, Unlisted procedure, nervous system)? AMA Comment Modifiers are used to indicate that a performed service or procedure identified by a specific CPT code has been altered by some circumstance but not changed in its definition. It is not appropriate to append modifiers to unlisted procedure codes because the unlisted procedure codes in the CPT codebook do not describe specific procedures. Instead, when reporting an unlisted code to describe a procedure or service, supporting...
Subscribe or sign in to view the full article.
Article Overview
This CPT Assistant article addresses a coding consultation for the nervous system surgery section and explains the general considerations involved when reporting unlisted procedure codes. It is intended for coders and billing professionals who work with CPT procedure reporting and documentation support.
Why This Topic Matters
Understanding how unlisted procedure codes are handled helps coding staff avoid improper modifier use and prepare the documentation needed to support accurate claim submission.
Article Sections
-
Coding Consultation: Questions and Answers
This section presents a coding question and the corresponding AMA response within the surgery/nervous system topic area. It focuses on general reporting considerations for an unlisted procedure code and related documentation support.
What You Will Learn
- How this CPT Assistant discussion frames a coding consultation on unlisted nervous system procedures.
- What general documentation is associated with reporting an unlisted procedure code.
- How the article positions modifier use in the context of unlisted procedure reporting.
- intended_audiences":["Medical coders","Billing specialists","Coding auditors","Health information management professionals"],"topics":["CPT coding guidance","Unlisted procedures","Modifiers","Documentation support","Nervous system surgery"],"medical_specialties":["Surgery","Neurology"],"code_sets":["CPT"],"codes":[{"code_set":"CPT","code":"64999"}],"code_ranges":[],"modifiers":[],"content_type":"Coding consultation Q&A","effective_dates":["September 2005"],"organizations_mentioned":["AMA"],"keywords":["CPT Assistant","unlisted procedure code","supporting documentation","nervous system","surgery"],"questions_answered":["Is it appropriate to append modifiers to unlisted procedure codes?"],"access_description":"Public metadata profile for a premium CPT Assistant article about a coding consultation related to nervous system surgery and unlisted procedure reporting.","disclosure_check":{"contains_code_descriptions":false,"contains_modifier_descriptions":false,"contains_actionable_coding_instructions":false,"contains_article_conclusions":false,"contains_detailed_examples":false}}}
Who Should Read This
- Medical coders
- Billing specialists
- Coding auditors
- Health information management professionals
Codes Discussed
Subscribe or sign in to view the full article.


Quick, Current, Complete - www.findacode.com