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G305
G305 – Intracardiac phonocardiography
OHIP Diagnostic & Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits
Intracardiac phonocardiography (G305) is a diagnostic cardiovascular procedure. It is used to record sounds from within the heart, often as part of a comprehensive cardiac catheterization study. It is listed on page alongside other cardiac catheterization studies such as G299 (Oximetry studies), G289 (Fick determination), G300 (Metabolic studies), G301 (Exercise studies), and G306 (Isotope studies).
When to Use
- Use G305 when performing intracardiac sound recording during a diagnostic cardiac catheterization to localize valvular or septal defects.
- Apply this code when documenting specific acoustic data that complements hemodynamic measurements obtained via G299 or G289.
Common Pitfalls
- Billing G305 as a standalone procedure without an associated cardiac catheterization service will trigger a rejection for lack of clinical context.
- Overlapping G305 with other diagnostic procedure codes in the J section can lead to audit scrutiny if the medical record does not explicitly detail the distinct technical effort for the phonocardiography.
Billing Tips
- Ensure the procedural report explicitly mentions the use of intracardiac phonocardiography to justify the claim against the base catheterization fee.
- Verify that the total time and resources claimed for G305 do not duplicate components already captured in the primary catheterization code G293.
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