What is OHIP billing code R924?

R924 is "Double outlet ventricle with transposition", an OHIP Radiology code from the Ontario Schedule of Benefits (Physician Services).

How much does R924 pay?

The current OHIP fee for R924 is $1728.90, effective 2025-04-01, per the Ontario Schedule of Benefits.

How do I bill R924 to OHIP?

R924 is submitted through OHIP's MCEDT claims system, either directly or via billing software. SnapBill validates R924 claims against the Schedule of Benefits rules before submission.

What codes are related to R924?

Codes related to R924 in the Schedule of Benefits include R720, R721, R722, R723, R768, R769, R770, R771.

All codes

R924

R924 – Double outlet ventricle with transposition

OHIP Radiology Code — CARDIOVASCULAR SURGICAL PROCEDURES · Schedule of Benefits

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R924 is a major cardiovascular surgical procedure for the total surgical repair of a double outlet ventricle with transposition. As a major surgery, the fee includes pre-operative assessment (excluding the major pre-operative visit where the decision to operate is made), the operation itself, and post-operative care. This service is eligible for anaesthesia and surgical assistant services, with specific base units assigned for each role as detailed in the unit calculation rules.

When to Use

Use R924 for the definitive surgical repair of double outlet right ventricle (DORV) or double outlet left ventricle (DOLV) associated with transposition of the great arteries.
Select R924 when the surgical plan involves complex intra-cardiac baffling or arterial switch procedures specifically indicated for the double outlet anatomy with transposition.

Common Pitfalls

Billing R924 alongside other major cardiovascular procedures performed in the same operative session without applying the multiple procedure rule, which requires the primary procedure to be billed at 100% and subsequent procedures at 85% or 50% as per Schedule of Benefits rules.
Attempting to bill for a second surgical assistant without prior authorization, as R924 is not on the pre-approved list for a second assistant and will trigger an automatic rejection.
Failing to document the specific age of the patient, which leads to missed revenue from the mandatory age-based surgical premiums (e.g., AGE_PREMIUM_LT30D or AGE_PREMIUM_LT1Y).

Billing Tips

Ensure the claim includes the appropriate age-based premium suffix or code, as these are significant percentage increases (10-30%) that are often overlooked in pediatric cardiac cases.
When billing for anaesthesia, ensure the base units for R924 are correctly calculated and augmented with ANAESTHESIA_EXTRA_UNITS if the patient meets ASA physical status III, IV, or V criteria.

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Provider Fee$1,728.90

Surgical Assistant Fee$225.18

Anaesthetist Fee$433.72

Non-Anaesthetist Fee$433.72

Effective: April 1, 2025

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