N533 – Pars reconstruction for spondylolysis
OHIP Otolaryngology Code — SPINAL SURGICAL PROCEDURES · Schedule of Benefits
Pars reconstruction for spondylolysis. This procedure is listed under lumbar spinal surgical procedures with instrumentation. The fee is for the surgeon (suffix A). When billed with suffix B (Assistant), it carries 9 basic units. When billed with suffix C (Anaesthesia), it carries 11 basic units. No other services in the Spinal Surgical Procedures section are eligible for payment when rendered with N533.
When to Use
- Use N533 when performing a direct pars repair or reconstruction for symptomatic spondylolysis in the lumbar spine.
- Select this code specifically for pars interarticularis stabilization procedures that utilize instrumentation, distinguishing it from simple decompression or fusion procedures.
Common Pitfalls
- Billing N533 in conjunction with any other code from the Spinal Surgical Procedures section (Z9) will result in an automatic rejection due to the global fee structure.
- Attempting to bill an additional decompression or fusion code alongside N533 is prohibited, as the fee is considered all-inclusive for the spinal surgical event.
Billing Tips
- Ensure the claim is submitted with the appropriate suffix (A for surgeon, B for assistant, C for anaesthesia) to correctly trigger the associated basic units.
Effective: April 1, 2025
Z. Spinal Surgical Procedures
SPINAL SURGICAL PROCEDURES
Surgical
Spinal Surgical Procedures
No other services in the Spinal Surgical Procedures section are eligible for payment when rendered with **N533**.
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