G297 – Angiograms
OHIP Diagnostic & Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits
This code is for angiograms performed during a cardiac catheterization session. The fee is payable for each angiogram, with a maximum of two billable angiograms per session: one for a right heart catheterization and one for a left heart catheterization, irrespective of the number of chambers injected. As per , G297 is classified as a Major Invasive Procedure and is eligible for After Hours Procedure Premiums. A related payment rule applies when performing transluminal coronary angioplasty (Z434): if the patient's anatomy is unknown at the time of the procedure, G297 may be claimed at 50% of the fee.
When to Use
- Use G297 when performing diagnostic angiography during a right heart catheterization session, distinct from any left heart imaging.
- Use G297 when performing diagnostic angiography during a left heart catheterization session, regardless of the number of individual chambers or vessels injected.
- Use G297 at 50% of the fee when performing it in conjunction with a transluminal coronary angioplasty (Z434) specifically when the patient's coronary anatomy is unknown at the start of the procedure.
Common Pitfalls
- Billing G297 multiple times for multiple chambers injected during a single heart catheterization; the code is restricted to one per side (right or left) per session.
- Attempting to claim G297 in addition to other diagnostic imaging codes that are considered bundled into the catheterization procedure.
- Failing to apply the 50% reduction when G297 is performed alongside Z434, which triggers an automatic rejection or audit flag.
Billing Tips
- Ensure you clearly document the right and left heart catheterization components separately to support the maximum claim of two G297 units.
- Always append the appropriate After Hours Procedure Premium (E409 or E410) to G297 if the procedure meets the non-elective criteria and timing requirements.
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