What is OHIP billing code S427?

S427 is "Bladder flap (Boari) - to include re-implantation of ureter", an OHIP Urology code from the Ontario Schedule of Benefits (Physician Services).

How much does S427 pay?

The current OHIP fee for S427 is $705.80, effective 2026-04-01, per the Ontario Schedule of Benefits.

How do I bill S427 to OHIP?

S427 is submitted through OHIP's MCEDT claims system, either directly or via billing software. SnapBill validates S427 claims against the Schedule of Benefits rules before submission.

What codes are related to S427?

Codes related to S427 in the Schedule of Benefits include E792.

All codes

S427

S427 – Bladder flap (Boari) - to include re-implantation of ureter

OHIP Urology Code — UROGENITAL AND URINARY SURGICAL PROCEDURES · Schedule of Benefits

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S427 is for a bladder flap (Boari) procedure and includes the re-implantation of the ureter as a constituent element. This procedure is eligible for a 25% fee increase via add-on code E792 when performed laparoscopically, as per page of the Schedule.

When to Use

Use S427 for the creation of a bladder flap (Boari flap) to bridge a distal ureteral defect, which inherently includes the ureteral re-implantation.
Select S427 when the procedure is performed to manage complex ureteral strictures or injuries where primary ureteroneocystostomy is not feasible due to the length of the defect.

Common Pitfalls

Do not bill S427 in addition to a standard ureteroneocystostomy code, as the re-implantation is already a constituent element of the Boari flap procedure.
Failure to append E792 when the procedure is performed laparoscopically results in a 25% underpayment of the total surgical fee.

Billing Tips

Always verify that the operative report explicitly describes the creation of the bladder flap, as simply performing a ureteral re-implantation without the flap does not qualify for S427.

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Provider Fee$705.80

Surgical Assistant Fee$77.46

Anaesthetist Fee$95.76

Non-Anaesthetist Fee$95.76

Effective: April 1, 2026

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