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

1. Accurately track infusion start and end times

2. Pair add-on codes with proper primary CPT and ICD-10 codes

3. Ensure documentation supports each additional hour

4. Review payer-specific rules for extended infusion therapy

5. 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.