Billing code
G359A — Special Single Agent Or Multi-agent Therapy Chemotherapy And/or Biologic Agent(s) With Major Toxicity That Require Frequent Monitoring And Prolonged Administration Periods And May Require Immediate Intervention By The Physician
Special high-toxicity chemotherapy
Bill G359 for chemotherapy or biologic therapy with major toxicity that needs frequent monitoring and long administration, such as high-dose methotrexate.
Watch for: It includes all assessments by any physician for the next 24 hours, plus venipuncture and line placement.
| Provider | Specialist | Assistant | Anaesthetist | Non-anaesthetist |
|---|---|---|---|---|
| $105.15 | $0.00 | $0.00 | $0.00 | $0.00 |
- Code
- G359A
- Description
- Special Single Agent Or Multi-agent Therapy Chemotherapy And/or Biologic Agent(s) With Major Toxicity That Require Frequent Monitoring And Prolonged Administration Periods And May Require Immediate Intervention By The Physician
- FHO+ basket
- Not in the FHO+ base rate basket (Schedule 2 or 2B).
- Effective date
- Apr 1, 2025
- Termination date
- No end date
Explanation
Updated October 26, 2026
Special chemotherapy or biologic therapy with major toxicity that needs frequent monitoring and long administration.
What it covers
G359 is single or multi-agent chemotherapy and/or biologic therapy with major toxicity that needs frequent monitoring and prolonged administration and may need immediate physician intervention (J57).
Examples include high-dose methotrexate with folinic acid rescue, high-dose cisplatin with hydration, high-dose cyclophosphamide, ifosfamide with MESNA, biologics combined with complex chemotherapy, and bispecific antibodies (J57).
Billing rules
- Payable only for biologic agents that are monoclonal antibodies or cytokines; blood products, insulin and vaccines are not biologic agents for this purpose (J57).
- Includes venipuncture, any vascular access line and giving the agent(s) (J57).
- Includes all patient assessments by any physician for 24 hours after the treatment (J57).
- The physician must be available to intervene promptly at the start and for the whole therapy to manage immediate and delayed toxicities (J57).
Related codes: G345, G381, G390, G382, G075
Source: Schedule of Benefits (July 1, 2026), Diagnostic and Therapeutic Procedures, Injections or Infusions (Chemotherapy), page J57.
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