HCPCS code A9539: Tc-99m pentetate, per study dose2026 Medicare rate & RVUs in Missouri
Reports a study dose of technetium-99m pentetate for nuclear medicine imaging, including renal studies and ventilation imaging.
CMS doesn’t publish an office rate for A9539 in Missouri.
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 A9539 covers
Technetium-99m pentetate (Tc-99m DTPA) is a diagnostic radiopharmaceutical used by nuclear medicine services. It may be given intravenously for renal imaging or inhaled as an aerosol for ventilation imaging, including the ventilation portion of a ventilation-perfusion lung study. Nuclear medicine departments report the radiopharmaceutical alongside the corresponding imaging service when both are provided.
A9539 represents one study dose, up to 25 millicuries, rather than a quantity billed per millicurie. Medicare assigns physician fee schedule status C: CMS publishes no national payment, and the Medicare Administrative Contractor sets payment for the claim. HCPCS pricing also assigns the item to other contractor pricing, with payment set by the contractor. Coverage is left to the Medicare contractor's judgment.
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 A9539 pays more and less in Missouri
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
| Payment locality | Office | Facility |
|---|---|---|
| Metropolitan Kansas City, MO | Unavailable | Unavailable |
| Metropolitan St. Louis, MO | Unavailable | Unavailable |
| Rest of Missouri | Unavailable | Unavailable |
How the A9539 rate is calculated
Each of A9539’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 · A9539
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 A9539
A9539 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 · A9539
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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A9539 isn’t priced in this setting.
A9539 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- A9540Tc-99m MAAPer study dose
- A9539 is Tc-99m pentetate, which may be used for ventilation imaging. A9540 is Tc-99m macroaggregated albumin for lung perfusion.
- A9548Indium-111 pentetatePer 0.5 mCi
- A9548 identifies indium-111 pentetate, not the technetium-99m agent in A9539. The radionuclide and clinical protocol distinguish the codes.
- A9551Tc-99m succimerPer study dose
- A9551 is Tc-99m succimer, used for renal cortical imaging. A9539 is Tc-99m pentetate, used for renal functional studies and ventilation imaging.
A9539 billing questions
When should A9539 be used instead of A9540?
A9539 identifies Tc-99m pentetate, which may be used for ventilation imaging. A9540 identifies Tc-99m macroaggregated albumin for lung perfusion; the agents may be used together in a ventilation-perfusion study.
How many units should be reported?
One unit represents a study dose up to 25 millicuries. The code is not billed per millicurie.
Does A9539 report the imaging service too?
A9539 identifies the radiopharmaceutical dose, not the imaging procedure. The imaging service is reported with its own procedure code.
How does Medicare price and cover A9539?
Physician fee schedule status C means CMS publishes no national payment and the Medicare Administrative Contractor sets payment. Coverage is left to the contractor's judgment.
How does A9539 compare with A9548?
A9548 identifies indium-111 pentetate, while A9539 identifies technetium-99m pentetate. The radionuclide and clinical protocol distinguish the codes.
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.
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