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N258
N258 – Percutaneous coagulation or glyceral injection of gasserian (trigeminal) ganglion or root - unilateral
OHIP Otolaryngology Code — NEUROLOGICAL SURGICAL PROCEDURES · Schedule of Benefits
Percutaneous coagulation or glyceral injection of gasserian (trigeminal) ganglion or root - unilateral
When to Use
- Use N258 for the percutaneous rhizotomy or chemical neurolysis of the trigeminal ganglion specifically for the management of trigeminal neuralgia.
- Select this code when performing a unilateral procedure; if the procedure is bilateral, you must bill N258 with the appropriate bilateral indicator or modifier as per OHIP guidelines.
Common Pitfalls
- Do not bill an assistant fee for this procedure, as N258 is explicitly restricted from having assistant services claimed.
- Avoid billing N258 in conjunction with other nerve block or diagnostic injection codes for the same anatomical site, as this is considered unbundling.
Billing Tips
- Ensure the operative report clearly details the percutaneous approach and the specific method (coagulation or glycerol injection) to support the N258 claim during potential audits.
- If the procedure is performed in an after-hours setting, ensure you append the correct E409 or E410 premium to the N258 base fee to maximize the procedural reimbursement.
Provider Fee$504.95
Anaesthetist Fee$170.39
Non-Anaesthetist Fee$170.39
Effective: April 1, 2025
Category
X. Neurological Surgical Procedures
Subcategory
NEUROLOGICAL SURGICAL PROCEDURES
Service Type
Surgical
Code Classes
Musculoskeletal System Surgical Procedures
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