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E646
E646 – Vein patch angioplasty of coronary artery
OHIP Surgical Assists Code — CARDIOVASCULAR SURGICAL PROCEDURES · Schedule of Benefits
When to Use
- Use E646 when a vein patch is required to reconstruct or enlarge the coronary artery lumen during a primary repair procedure billed as R742 or R743.
- Claim this code specifically when the surgical technique involves the application of a patch graft to the coronary artery, rather than a simple primary closure.
Common Pitfalls
- Billing E646 as a standalone procedure will result in automatic rejection; it must be submitted on the same claim as the primary R742 or R743.
- Attempting to bill E646 for routine closure of the arteriotomy without the use of a patch graft is an audit risk and constitutes an invalid claim.
Billing Tips
- Ensure the operative report explicitly details the use of a vein patch, as this documentation is required to justify the additional fee over the base repair code.
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