S300 – Whipple type procedure
OHIP Urology Code — DIGESTIVE SYSTEM SURGICAL PROCEDURES · Schedule of Benefits
S300 represents a pancreatectomy, specifically a "Whipple type" procedure. This major surgical service is eligible for surgeon (A), assistant (B), and anaesthetist (C) billing. The fees for assistant and anaesthetist services are calculated based on basic units plus time units. This procedure may be performed laparoscopically (E793) and can be billed with a cholecystectomy (E709) when performed concurrently. A second assistant's services are payable for this procedure without special authorization as per .
When to Use
- Use S300 as the primary code for a formal pancreaticoduodenectomy (Whipple procedure) involving the resection of the pancreatic head, duodenum, and gallbladder.
- Use S300 in conjunction with E709 when a cholecystectomy is performed concurrently, as the gallbladder is typically removed during the standard Whipple resection.
Common Pitfalls
- Failing to append the E793 premium when the procedure is performed laparoscopically, which results in a 25% underpayment of the surgical fee.
- Incorrectly assuming a second assistant requires prior authorization; S300 is specifically exempt from this requirement under GP90.
- Forgetting to document the Injury Severity Score (ISS) when attempting to claim the E420 trauma premium, which will lead to automatic rejection.
Billing Tips
- Ensure the surgical start time is clearly documented to support the application of after-hours premiums (E409, E410) or anaesthesia time units.
Effective: April 1, 2026
S. Digestive System Surgical Procedures
DIGESTIVE SYSTEM SURGICAL PROCEDURES
Surgical
Digestive System Surgical Procedures
Anaesthesia basic units: 13
Assistant basic units: 9
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