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L833
L833 – Nerve Teasing
OHIP Dermatology Code — Laboratory Medicine · Schedule of Benefits
L833 is an insured service under the Laboratory Medicine section of the Schedule of Benefits, categorized under Anatomic Pathology - Surgical Pathology. It represents the professional service of performing nerve teasing, which is a meticulous process of dissecting and separating individual nerve fibres from a biopsy specimen to allow for detailed microscopic examination and diagnosis.
When to Use
- Use L833 when performing specialized teased-fiber preparation on a peripheral nerve biopsy to evaluate for segmental demyelination or axonal degeneration.
- Select L833 specifically for the technical and professional labor of isolating individual nerve fibers, distinct from the standard surgical pathology examination billed under L861-L867.
Common Pitfalls
- Billing L833 in conjunction with standard surgical pathology codes (L861-L867) for the same specimen without clear documentation of the distinct, additional labor involved in the teasing process.
- Submitting L833 for routine nerve biopsy processing that does not involve the specific manual fiber dissection required for the 'teasing' procedure.
Billing Tips
- Ensure the pathology report explicitly details the teased-fiber findings, as this documentation is the primary evidence required to justify the L833 fee during an audit.
Provider Fee$140.75
Specialist Fee$0.00
Surgical Assistant Fee$0.00
Anaesthetist Fee$0.00
Non-Anaesthetist Fee$0.00
Effective: April 1, 2025
Category
Diagnostic and Therapeutic Procedures
Subcategory
Laboratory Medicine
Service Type
Laboratory
Code Classes
Diagnostic and Therapeutic Procedures
Referral RequiredFrom: Physician, NursePractitioner, DentalSurgeon, Midwife, OralMaxillofacialSurgeon
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