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G509
G509 – Bypass graft angiogram
OHIP Diagnostic & Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits
Bypass graft angiogram is a diagnostic imaging procedure performed to assess the patency and condition of a bypass graft. This service includes the injection of contrast material and radiographic visualization of an internal mammary artery implant. Payment is limited to a maximum of one angiogram per bypass graft.
When to Use
- Use G509 when performing a diagnostic angiogram specifically to evaluate the patency of a coronary artery bypass graft.
- Use this code when visualizing an internal mammary artery (IMA) implant, as this is explicitly included in the G509 service definition.
Common Pitfalls
- Billing G509 more than once per bypass graft will result in a rejection, as the Schedule of Benefits limits payment to one angiogram per graft.
- Attempting to bill G509 in conjunction with other diagnostic imaging codes for the same vessel segment may trigger a duplicate service audit.
Billing Tips
- Apply the E409 or E410 premiums if the procedure is non-elective and performed during after-hours or night shifts, as G509 is explicitly listed as an eligible procedure for these surcharges.
Provider Fee$80.40
Surgical Assistant Fee$40.20
Effective: April 1, 2025
Category
J. Diagnostic and Therapeutic Procedures
Subcategory
DIAGNOSTIC AND THERAPEUTIC PROCEDURES
Service Type
Procedure
Code Classes
Diagnostic and Therapeutic Procedures
Includes internal mammary artery implant.
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