Z500 – Sialolithotomy
OHIP Psychiatric Code — DIGESTIVE SYSTEM SURGICAL PROCEDURES · Schedule of Benefits
Sialolithotomy is the surgical incision for the removal of a calculus (sialolith) from a salivary gland or duct. This service is listed under the Incision subsection for Salivary Glands and Ducts within Digestive System Surgical Procedures. The fee listed is for the surgeon and does not include base units for an assistant or anaesthesia, implying the procedure is typically performed under local anaesthesia. For cases requiring general anaesthesia, see Z521.
When to Use
- Use Z500 for the simple removal of a salivary stone performed under local anaesthesia in an office or clinic setting.
- Use Z500 when the procedure is limited to a surgical incision of the duct or gland to extract a calculus, distinguishing it from more complex gland excisions.
Common Pitfalls
- Billing Z500 in conjunction with Z521 is a common rejection; choose only one based on the anaesthesia modality used.
- Attempting to bill a separate consultation fee on the same day as Z500 may be rejected if the assessment is deemed part of the pre-operative surgical care.
Billing Tips
- Ensure you apply the appropriate age-based premium if the patient is under 16 years old, as these are automatically calculated based on the patient's date of birth.
- If the procedure is non-elective and performed during after-hours, ensure you append the correct premium code (E409 or E410) to maximize the procedural fee.
Effective: April 1, 2025
S. Digestive System Surgical Procedures
DIGESTIVE SYSTEM SURGICAL PROCEDURES
Surgical
Digestive System Surgical Procedures
Ready to bill this code?
SnapBill makes OHIP billing simple — auto-filled codes, validation, and batch submission.