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G410
G410 – Amytal test (Wada)-bilateral - supervision and co-ordination of tests
OHIP Diagnostic & Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits
This service, G410, covers the supervision and co-ordination of a bilateral Amytal test, also known as a Wada test. This procedure is typically used in a neurological assessment. There are no specific payment rules or notes associated with this code in the Schedule.
When to Use
- Use G410 when you are the physician providing direct supervision and coordination for a bilateral intracarotid amobarbital procedure to determine hemispheric language and memory dominance.
- Select G410 specifically for the bilateral procedure; do not use it if only a unilateral assessment is performed, as that would require a different billing approach.
Common Pitfalls
- Billing G410 in conjunction with G413 or G419 for the same patient encounter may trigger a rejection for duplicate service or overlapping procedural components.
- Failing to document the specific bilateral nature of the test can lead to audit recovery if the claim is flagged for lacking evidence of the second-side assessment.
Billing Tips
- Ensure the hospital record clearly identifies your role as the supervising physician for the bilateral coordination, as this is the primary requirement for the $68.40 fee.
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