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E598
E598 – Patellar replacement or patelloplasty associated with knee arthroplasty
OHIP Surgical Assists Code — MUSCULOSKELETAL SYSTEM SURGICAL PROCEDURES · Schedule of Benefits
When to Use
- Use E598 as an add-on fee when performing a patellar resurfacing or patelloplasty during a primary or revision total knee arthroplasty (R482, R483, R441, R248, or R244).
- Apply this code specifically when the patellar component is addressed in the same operative session as the primary knee replacement procedure.
Common Pitfalls
- Billing E598 without an associated primary knee arthroplasty code (R482, R483, R441, R248, or R244) will result in an automatic rejection.
- Attempting to bill E598 for a standalone patellar procedure that is not part of a comprehensive knee arthroplasty is incorrect and will be flagged during audit.
Billing Tips
- Ensure the primary procedure code (e.g., R482) is listed first on the claim to establish the surgical context required for the E598 add-on.
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