How Much Does Therapeutic/proph/diagnostic Intravenous Inf Addon Cost?
Also known as: Ther/proph/diag iv inf addon (CPT 96366)
Additional hour of IV infusion beyond the first hour.
Therapeutic/proph/diagnostic Intravenous Inf Addon (CPT 96366) costs $21 at Medicare rates.
Patient Guide: Therapeutic/proph/diagnostic Intravenous Inf Addon
What you need to know before your appointment
What to Expect
Continued IV medication infusion with ongoing monitoring by nursing staff.
How Long Does It Take?
Each additional hour
Common Reasons Doctors Order This
Longer infusions requiring extended time (chemotherapy, some biologic medications)
How to Prepare
Bring entertainment. Stay comfortable. Report any symptoms to the nurse immediately.
Procedures Commonly Done Together
These procedures are frequently performed alongside Ther/proph/diag iv inf addon
How to Reduce Your Cost for Ther/proph/diag iv inf addon
Practical tips that can save you hundreds or thousands of dollars
- 1 Ask about cash-pay discounts
Many hospitals and clinics offer 20-40% discounts for self-pay patients. Always ask before scheduling.
- 2 Compare facility vs. office setting costs
Some procedures cost significantly less in an office setting than a hospital. Ask your provider about options.
- 3 Shop around — costs vary significantly
Costs can vary 2-3x between providers in the same city. Get quotes from multiple facilities.
How is the Price Calculated?
Medicare calculates procedure payments using Relative Value Units (RVUs). Each procedure has three components multiplied by a conversion factor ($33.40 in 2026) and adjusted by geographic cost indices.
Payment = Total RVU (0.64) x CF ($33.40) = $21
Related Procedures
Similar procedures in the same category or body system
Frequently Asked Questions
How much does Ther/proph/diag iv inf addon cost?
The Medicare facility rate for Ther/proph/diag iv inf addon is $21. Commercial insurance rates typically range from 150% to 250% of Medicare (varies by plan).
How much does Ther/proph/diag iv inf addon cost without insurance?
Without insurance, the cost of Ther/proph/diag iv inf addon can range from 150% of Medicare to 500% of Medicare depending on the facility. Many hospitals and clinics offer self-pay discounts of 20-40% off their chargemaster price. Always ask about cash pricing before your visit.
Does insurance cover Ther/proph/diag iv inf addon?
Most commercial health insurance plans and Medicare cover Ther/proph/diag iv inf addon when ordered by a physician for a medically necessary reason. Your out-of-pocket cost depends on your plan's deductible, copay/coinsurance structure, and whether you use an in-network provider. Check with your insurance company before scheduling to confirm coverage and get a cost estimate.
Why does the cost vary so much by location?
Medicare adjusts payments using Geographic Practice Cost Indices (GPCIs) that reflect local differences in physician work costs, practice expenses, and malpractice insurance. Manhattan, San Francisco, and other high-cost areas pay significantly more than rural regions. Commercial insurers follow similar geographic patterns.