What is OHIP billing code S319?

S319 is "Mesenteric cyst", an OHIP Urology code from the Ontario Schedule of Benefits (Physician Services).

How much does S319 pay?

The current OHIP fee for S319 is $381.65, effective 2026-04-01, per the Ontario Schedule of Benefits.

How do I bill S319 to OHIP?

S319 is submitted through OHIP's MCEDT claims system, either directly or via billing software. SnapBill validates S319 claims against the Schedule of Benefits rules before submission.

All codes

S319

S319 – Mesenteric cyst

OHIP Urology Code — DIGESTIVE SYSTEM SURGICAL PROCEDURES · Schedule of Benefits

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S319 is a surgical procedure for the treatment of a mesenteric cyst. The surgeon performing the procedure bills with suffix 'A'. This service is eligible for an assistant and anaesthetist. The base units for an assistant (suffix 'B') are 6, as specified on page . The base units for an anaesthetist (suffix 'C') are 6, as specified on page . Time units are added to these base units to calculate the final fee for the assistant and anaesthetist as per the rules in the General Preamble (see for assistants and for anaesthetists).

When to Use

Use S319 for the surgical excision or resection of a confirmed mesenteric cyst.
Use this code when the procedure is performed as a standalone surgical intervention, distinct from more complex bowel resections that would fall under different surgical codes.

Common Pitfalls

Billing S319 in conjunction with other major abdominal procedures without ensuring the claim adheres to the Multiple Procedure Rule, which may result in a 50% reduction on the second procedure.
Failing to document the specific anatomical location and pathology of the mesenteric cyst, which is required to justify the use of this specific code over general abdominal exploration codes.
Incorrectly applying After Hours premiums (E409/E410) to elective, non-urgent cyst removals; these premiums are strictly for non-elective or emergency-delayed procedures.

Billing Tips

Ensure that if an assistant or anaesthetist is utilized, their claims are submitted with the correct suffix (B or C) and include the required time units calculated according to GP85 or GP92.
If the patient qualifies for an age-based premium (e.g., AGE_PREMIUM_5Y_16Y), ensure it is applied to the base fee of S319 as it is a surgical procedure listed in the relevant sections of the Schedule.

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Provider Fee$381.65

Surgical Assistant Fee$77.46

Anaesthetist Fee$95.76

Non-Anaesthetist Fee$95.76

Effective: April 1, 2026

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