HCPCS code A9555: Rubidium-82, per study dose, up to 60 mCi2026 Medicare rate & RVUs in Georgia
Reports a rubidium-82 dose used for PET myocardial perfusion imaging, commonly during cardiac evaluation at rest and with stress.
CMS doesn’t publish an office rate for A9555 in Georgia.
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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What A9555 covers
Rubidium-82 is an intravenous radiotracer used for PET myocardial perfusion imaging to assess blood flow to the heart muscle. Nuclear medicine and cardiology teams commonly use it during cardiac evaluation at rest and with pharmacologic stress. A9555 identifies the radiopharmaceutical dose used with the imaging study, rather than the PET imaging service itself.
A9555 represents one study dose of rubidium-82, up to 60 millicuries. Its physician fee schedule status is C, meaning the Medicare Administrative Contractor sets payment for each claim; CMS publishes no national payment. The HCPCS file establishes no payment value, and coverage is left to the Medicare contractor’s judgment. This is a HCPCS Level II radiopharmaceutical 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 A9555 pays more and less in Georgia
| Payment locality | Office | Facility |
|---|---|---|
| Atlanta, GA | Unavailable | Unavailable |
| Rest of Georgia | Unavailable | Unavailable |
How the A9555 rate is calculated
Each of A9555’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 · A9555
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 A9555
A9555 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 · A9555
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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A9555 isn’t priced in this setting.
A9555 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 78491Myocardial PETSingle study
- 78491 reports cardiac PET myocardial perfusion imaging for a single study. A9555 identifies the rubidium-82 radiopharmaceutical, not the imaging service.
- 78492PET perfusionMultiple studies
- 78492 reports cardiac PET myocardial perfusion imaging for multiple studies, such as rest and stress. A9555 identifies the radiopharmaceutical used for the study.
- A9500Tc-99m sestamibiPer study dose
- A9500 identifies technetium-99m sestamibi, generally used for SPECT myocardial perfusion imaging; A9555 identifies rubidium-82 used for PET.
- A9502TetrofosminPer study dose
- A9502 identifies technetium-99m tetrofosmin, generally used for SPECT myocardial perfusion imaging; A9555 identifies rubidium-82 used for PET.
A9555 billing questions
What does one unit of A9555 represent?
One unit represents a study dose of rubidium-82 up to 60 millicuries.
Does A9555 identify the cardiac PET scan?
No. A9555 identifies the rubidium-82 radiopharmaceutical dose; cardiac PET imaging codes describe the imaging service.
How do A9555 and A9500 differ?
A9555 identifies rubidium-82 used for PET myocardial perfusion imaging. A9500 identifies technetium-99m sestamibi, commonly used for SPECT myocardial perfusion imaging.
Which cardiac PET codes are associated with A9555?
Cardiac PET myocardial perfusion imaging codes include 78491 for a single study and 78492 for multiple studies.
How does Medicare price and cover A9555?
The physician fee schedule assigns status C, so the Medicare Administrative Contractor sets payment for each claim. Coverage is left to the 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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