Z520 – Change of gastrostomy tube
OHIP Psychiatric Code — DIGESTIVE SYSTEM SURGICAL PROCEDURES · Schedule of Benefits
Z520 is a service for the change of a gastrostomy tube. It is listed in both the Diagnostic and Therapeutic Procedures section () and the Digestive System Surgical Procedures section ().
When to Use
- Use Z520 for the routine replacement of an existing gastrostomy tube where the tract is already established.
- Use this code when performing a simple exchange of a balloon-type or low-profile gastrostomy device.
Common Pitfalls
- Do not bill Z520 in conjunction with a consultation or assessment code (e.g., A007) unless a separate, identifiable clinical problem is addressed during the same visit.
- Avoid billing Z520 if the procedure requires significant surgical intervention or tract dilation, as this may be more appropriately billed under a different surgical code depending on the complexity.
Billing Tips
- Since Z520 is a surgical procedure code, ensure you apply the appropriate age-based premiums if the patient is under 16 years of age to maximize the claim value.
- If the tube change is performed on an emergency basis after hours, remember to append the applicable E409 or E410 premium to the Z520 fee.
Effective: April 1, 2025
J. Diagnostic and Therapeutic Procedures
DIGESTIVE SYSTEM SURGICAL PROCEDURES
Procedure
Diagnostic and Therapeutic Procedures, Digestive System Surgical Procedures
The '#' prefix indicates that for services performed in a hospital, the premises, equipment, supplies, and personnel are funded by the hospital's global budget. For services in an ICHSC, these costs are funded by the ICHSC. Patients cannot be charged for these components if the service is rendered outside a hospital or ICHSC.
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