The 96366 CPT code is used to bill for each additional hour of IV infusion therapy beyond the initial service billed with 96365. Proper billing ensures your infusion practice receives full reimbursement for extended therapy sessions.
Infusion Billing Services specializes in managing 96366 coding, ensuring claims are accurate and compliant.
What Is the 96366 CPT Code?
96366 represents each additional hour of intravenous infusion. It is billed as an add-on to 96365 for therapies such as:
Chemotherapy
Biologics
Immunotherapy
IV hydration
Only one 96366 code is billed per additional hour beyond the initial infusion.
Documentation Requirements
Documentation must include:
Start and stop times for the additional infusion hour
Name and dosage of the medication
Clinical notes supporting continued infusion
Physician authorization for prolonged therapy
Proper documentation reduces denials and ensures compliance. Infusion Billing Services reviews claims to verify all documentation meets payer requirements.
Common Errors
Mistakes with 96366 often include:
Billing for less than 60 minutes
Misaligning add-on hours with initial infusion
Missing documentation for clinical necessity
Forgetting to link with primary CPT and ICD-10 codes
Avoiding these errors improves claim approval and reduces administrative burden.
Best Practices
Accurately track infusion start and end times
Pair add-on codes with proper primary CPT and ICD-10 codes
Ensure documentation supports each additional hour
Review payer-specific rules for extended infusion therapy
Perform internal audits to maintain accuracy
How Infusion Billing Services Helps
Infusion Billing Services provides expert support for:
Accurate 96366 coding and submission
Claim review and denial management
Revenue cycle optimization for infusion centers
Staff training on proper coding and documentation
Conclusion
The 96366 CPT code ensures infusion practices are reimbursed for extended therapy. Partnering with Infusion Billing Services guarantees accurate billing, reduced denials, and improved revenue, allowing infusion centers to focus on patient care rather than administrative issues.
