G389 – Preparation and infusion of gamma globulin
OHIP Diagnostic & Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits
Payable for the infusion of gamma globulin, which is initiated by the physician and includes preparation of the substance. This service is limited to one per patient, per day. As with all insured services, this procedure includes the common elements of an insured service as defined in the Schedule (-).
When to Use
- Use G389 when you personally initiate and prepare the gamma globulin infusion for a patient in a clinical setting.
- Select G389 specifically for gamma globulin administration rather than using general injection codes like G380 or G381, which are intended for different therapeutic substances.
Common Pitfalls
- Billing G389 more than once per patient per day will result in an automatic rejection, as the code is strictly limited to a single claim per day.
- Attempting to bill G389 in conjunction with other intravenous injection codes (like G381) for the same infusion session often leads to audit flags for duplicate service claims.
Billing Tips
- Ensure your documentation explicitly notes the preparation steps and the initiation of the infusion to satisfy the requirements for the 'common elements' of an insured service.
- If the infusion is performed on an emergency basis outside of standard hours, ensure you append the appropriate Special Visit Premium to maximize the claim value.
Effective: April 1, 2025
J. Diagnostic and Therapeutic Procedures
DIAGNOSTIC AND THERAPEUTIC PROCEDURES
Procedure
Diagnostic and Therapeutic Procedures
The following notes are listed in the same section but apply to other intravenous codes: - G376 or G379 apply to cryoprecipitate infusion. - G376 or G379 may not be claimed with x-rays as they are included in the service. - Except for G381, injections into established I.V. apparatus may not be claimed.
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