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Z424
Z424 – Transseptal left heart catheterization
OHIP Psychiatric Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits
Transseptal left heart catheterization, with or without pressure measurements, with or without dye injection. This procedure involves passing a catheter across the interatrial septum to access the left atrium, typically performed in conjunction with electrophysiologic procedures.
When to Use
- Use Z424 when performing a transseptal puncture to gain access to the left atrium for electrophysiologic procedures, such as atrial fibrillation ablation.
- Use Z424 when the procedure is performed in conjunction with G176, G177, or G178, as it is not payable as a standalone diagnostic code.
Common Pitfalls
- Billing Z424 without an associated electrophysiology procedure code (G176, G177, or G178) will result in an automatic rejection.
- Attempting to bill for more than two transseptal placements per patient encounter will trigger a rejection, as the code is capped at a maximum of two units.
Billing Tips
- Ensure the claim includes the primary electrophysiology procedure code (G176, G177, or G178) on the same submission to satisfy the mandatory billing interaction requirement.
- If performing two distinct transseptal placements, ensure the quantity field is set to 2 to capture the full allowable fee.
Provider Fee$297.15
Surgical Assistant Fee$148.58
Anaesthetist Fee$92.94
Non-Anaesthetist Fee$92.94
Effective: April 1, 2025
Category
J. Diagnostic and Therapeutic Procedures
Subcategory
DIAGNOSTIC AND THERAPEUTIC PROCEDURES
Service Type
Procedure
Code Classes
Diagnostic and Therapeutic Procedures
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