HCPCS code A9579: MRI contrast agent, unspecified agent, per mL2026 Medicare rate & RVUs in Florida
Reports each milliliter of an unspecified gadolinium-based contrast agent administered intravenously for a contrast-enhanced MRI examination.
CMS doesn’t publish an office rate for A9579 in Florida.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
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On this page 9 sections
What A9579 covers
This HCPCS Level II code identifies a gadolinium-based contrast agent for MRI when the administered product is not represented by a more specific code. These agents are administered intravenously to improve visualization on MRI. Radiology departments, imaging centers, and other facilities furnishing the contrast may report the drug item with the MRI service.
Medicare assigns status X, meaning the physician fee schedule does not pay this code because it is not a physician service under the Medicare statute. When covered, it is treated as a Part B drug and generally paid using CMS quarterly Average Sales Price drug pricing files. Coverage is left to the Medicare contractor’s judgment. One billing unit represents 1 mL; report units according to the volume furnished. Use a product-specific code when the administered agent has a more specific HCPCS code.
This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.
Where A9579 pays more and less in Florida
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
| Payment locality | Office | Facility |
|---|---|---|
| Fort Lauderdale, FL | Unavailable | Unavailable |
| Miami, FL | Unavailable | Unavailable |
| Rest of Florida | Unavailable | Unavailable |
How the A9579 rate is calculated
Each of A9579’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.
How the rate is built · A9579
RVUs × geographic indexes × conversion factor
Work0.00
0.00 RVUs× 1.000 GPCI
Practice expense0.00
0.00 RVUs× 1.000 GPCI
Malpractice0.00
0.00 RVUs× 1.000 GPCI
Adjusted RVUs
0.0000
Conversion factor
$33.4009
Medicare rate
$0.00
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for A9579
A9579 has no global surgery period, no multiple-procedure, bilateral or assistant-at-surgery adjustment, and no professional/technical split. What changes the payment is where the service happens: the place of service on the claim decides whether Medicare pays the office or the facility rate.
Place of service · A9579
Which rate does Medicare pay?
The POS code on the claim line (CMS-1500 box 24B).
POS 11 · non-facility rate · national
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A9579 isn’t priced in this setting.
A9579 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- A9575Gadoterate injectionPer 0.1 mL
- A9575 identifies gadoterate meglumine and uses 0.1 mL units. This code is for a gadolinium-based MRI agent not represented by a more specific code and uses 1 mL units.
- A9576ProHance injectionPer 1 mL
- A9576 identifies the ProHance multipack presentation. Use this code when the administered agent is not represented by a more specific HCPCS code.
- A9577MultiHance injectionPer mL
- A9577 identifies MultiHance. Use this code only when the administered agent is not represented by a more specific HCPCS code.
- A9585Gadobutrol injectionPer 0.1 mL
- A9585 identifies gadobutrol injection. Use this code only when the administered agent is not represented by a more specific HCPCS code.
A9579 billing questions
When should this code be used instead of a product-specific gadolinium code?
Use this code when the gadolinium-based MRI agent is not represented by a more specific HCPCS code. If the administered product has its own code, report that product-specific code instead.
How many units should be reported?
Each unit represents 1 mL. Report units according to the volume of the agent billed.
Does Medicare pay this code under the physician fee schedule?
No. Status X means the physician fee schedule does not pay the code; when covered, it is treated as a Part B drug and generally uses CMS quarterly ASP drug pricing files.
Does Medicare automatically cover the contrast agent?
No. Coverage is left to the Medicare contractor’s judgment.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.
CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027
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