R771 – Vascular ring
OHIP Radiology Code — CARDIOVASCULAR SURGICAL PROCEDURES · Schedule of Benefits
R771 is the fee code for the surgical correction of a vascular ring. This procedure involves the division of the anomalous blood vessels that form a ring around the trachea and esophagus, thereby relieving compression. This service is billable by the surgeon (suffix A), surgical assistant (suffix B), and anaesthetist (suffix C), each with specific fee calculation rules. The fees for the assistant and anaesthetist are calculated based on a combination of basic units and time units.
When to Use
- Use R771 for the definitive surgical division of a vascular ring (e.g., double aortic arch or right aortic arch with aberrant left subclavian artery) causing symptomatic tracheal or esophageal compression.
- Use R771 when the primary intent of the procedure is the relief of airway or esophageal obstruction via vessel division, distinguishing it from general thoracic vascular procedures like R720 or R721.
Common Pitfalls
- Failure to apply the appropriate age-based premium (AGE_PREMIUM_LT30D through AGE_PREMIUM_5Y_16Y) for pediatric patients, which is a mandatory percentage increase on the surgeon's fee.
- Incorrectly billing R771 alongside other cardiovascular procedures without acknowledging that basic units for assistants and anaesthetists are restricted to the major procedure only.
Billing Tips
- A second surgical assistant is automatically eligible for R771 without special authorization; ensure both assistants bill their respective services to avoid claim rejection.
- Always document the specific anatomical nature of the vascular ring in the operative report to support the use of R771 over less specific thoracic surgical codes.
Effective: April 1, 2026
Q. Cardiovascular Surgical Procedures
CARDIOVASCULAR SURGICAL PROCEDURES
Surgical
Cardiovascular Surgical Procedures
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