CPT 64999
Global YYYUnlisted px nervous system
This code does not have a national work RVU on the current Physician Fee Schedule. Pricing may be carrier-determined, non-covered, or tracked via a separate methodology.
CPT 64999 Billing & Documentation Guide
CPT code 64999 (Unlisted px nervous system) is classified under Surgery (Endocrine/Nervous/Eye/Ear) with a global period indicator of YYY. This code uses the No national RVU payment methodology rather than standard RVU-based Physician Fee Schedule pricing. Refer to the methodology notice above for billing implications.
When billing 64999, ensure documentation supports medical necessity and the specific components required for the code's level of service. For E/M codes, document MDM (medical decision-making) elements: problems addressed, data reviewed, and risk. For procedural codes, document the indication, technique, and any complications. Always verify current NCCI edits before bundling with related codes.
Payment Status & Global Period
Carrier-priced (MAC determines payment locally)
Carrier-determined global period
MUE Limit (Medically Unlikely Edits)
Submitting more than 1 units of 64999 for the same patient on the same date triggers automatic line denial unless an appropriate modifier and supporting documentation justify the higher quantity.
Frequently Asked Questions, CPT 64999
What does CPT code 64999 mean? +
CPT code 64999 represents: Unlisted px nervous system. It's in the Surgery (Endocrine/Nervous/Eye/Ear) category with a global period of YYY.
What is the Medicare reimbursement for CPT 64999? +
This code does not have a national work RVU on the current Physician Fee Schedule. Pricing may be carrier-determined, non-covered, or tracked via a separate methodology.
What modifiers can I use with CPT 64999? +
Surgery codes commonly use modifier 22 (increased procedural services), 50 (bilateral), 51 (multiple procedures), 52 (reduced services), 58/78/79 (staged, unplanned return, unrelated within global), 62 (co-surgeons), 80/82 (assistant surgeon), and 59 or the X{EPSU} subset for distinct procedural service.
What bundling edits apply to CPT 64999? +
No NCCI PTP edits currently on file for this code.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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