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HCPCS code A9556: Gallium-67 citrate, per millicurie2026 Medicare rate & RVUs

Gallium-67 citrate is an intravenous diagnostic radiopharmaceutical used for nuclear imaging of selected infections, inflammatory conditions, and tumors.

CMS RVU26DEffective Oct 1, 2026109 payment localities216 Medicare services in 2024

Medicare rate · A9556

Gallium-67 citrate, per millicurie

Office or facility?

Work RVUs
0
Total RVUs
0.00
Global days
XXX

National rate · 2026

—

Not priced in the facility setting.

See every locality for A9556 →Billed by an NP, PA or therapist? →

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

Your location

Medicare pays by the payment locality where the service is performed.

On this page 10 sections
  1. Medicare rate
  2. What A9556 covers
  3. By payment locality
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Similar codes
  8. Related codes
  9. Billing questions
  10. Sources

What A9556 covers

Gallium-67 citrate is an intravenously administered radioactive imaging agent. Nuclear medicine departments and imaging centers use it for diagnostic studies that help evaluate selected infections and inflammatory conditions, as well as tumors such as lymphoma. The radiopharmaceutical is administered for imaging; the imaging service itself is represented by the applicable nuclear medicine procedure code.

For Medicare, the physician fee schedule status is C, meaning CMS publishes no national payment amount and the Medicare Administrative Contractor sets payment for each claim. The HCPCS pricing method is other contractor pricing, and coverage is left to the contractor’s judgment. Report A9556 by the amount in millicuries: each billing unit represents one millicurie of gallium Ga-67 citrate. The code identifies the diagnostic radiopharmaceutical, not the imaging procedure.

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 A9556 pays more and less

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 of 109 payment localities

A9556 office and facility rates by payment locality
Payment localityOfficeFacility
AlabamaUnavailableUnavailable
AlaskaUnavailableUnavailable
ArizonaUnavailableUnavailable
ArkansasUnavailableUnavailable
Atlanta, GAUnavailableUnavailable
Austin, TXUnavailableUnavailable
Bakersfield, CAUnavailableUnavailable
Baltimore area, MDUnavailableUnavailable
Beaumont, TXUnavailableUnavailable
Brazoria, TXUnavailableUnavailable

A9556 rates by state

Office rate range in each state. Select a state to see its payment localities.

MEWIVTNHMTNDMNMINYMARIWAIDWYSDIAILINOHPANJCTORNVUTCONEMOKYWVVAMDDECAAZNMKSOKARTNNCSCDCTXLAMSALGAFLAKHI

Explore a state

Local rates. Clear comparisons.

Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.

View every state and territory as a table
A9556 office rate range by state
State / territoryOffice rate rangeLocalities
AKNo published base rate1
ALNo published base rate1
ARNo published base rate1
AZNo published base rate1
CANo published base rate29
CONo published base rate1
CTNo published base rate1
DCNo published base rate1
DENo published base rate1
FLNo published base rate3
GANo published base rate2
GUNo published base rate1
HINo published base rate1
IANo published base rate1
IDNo published base rate1
ILNo published base rate4
INNo published base rate1
KSNo published base rate1
KYNo published base rate1
LANo published base rate2
MANo published base rate2
MDNo published base rate3
MENo published base rate2
MINo published base rate2
MNNo published base rate1
MONo published base rate3
MSNo published base rate1
MTNo published base rate1
NCNo published base rate1
NDNo published base rate1
NENo published base rate1
NHNo published base rate1
NJNo published base rate2
NMNo published base rate1
NVNo published base rate1
NYNo published base rate5
OHNo published base rate1
OKNo published base rate1
ORNo published base rate2
PANo published base rate2
PRNo published base rate1
RINo published base rate1
SCNo published base rate1
SDNo published base rate1
TNNo published base rate1
TXNo published base rate8
UTNo published base rate1
VANo published base rate2
VINo published base rate1
VTNo published base rate1
WANo published base rate2
WINo published base rate1
WVNo published base rate1
WYNo published base rate1

How the A9556 rate is calculated

Each of A9556’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 · A9556

RVUs × geographic indexes × conversion factor

Office or facility?

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 A9556

A9556 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 · A9556

Which rate does Medicare pay?

The POS code on the claim line (CMS-1500 box 24B).

POS 11 · non-facility rate · national

—

A9556 isn’t priced in this setting.

A9556 compared with similar codes

Compare codes · National

4 codes, side by side

Office or facility?

  • A9556

    Gallium-67 citrate, per millicurie0 wRVU

    Not priced

  • A9552

    FDG, per study dose0 wRVU

    Not priced

  • A9557

    Tc-99m bicisate, per study dose0 wRVU

    Not priced

  • A9551

    Tc-99m succimer, per study dose0 wRVU

    Not priced

How to choose

A9552FDGPer study dose
A9552 is fluorine-18 FDG, commonly used for PET imaging. A9556 is gallium-67 citrate, a different diagnostic imaging agent.
A9557Tc-99m bicisatePer study dose
A9557 is technetium-99m bicisate for brain perfusion imaging. A9556 identifies gallium-67 citrate.
A9551Tc-99m succimerPer study dose
A9551 identifies technetium-99m succimer, used for renal cortical imaging. It is a different radiopharmaceutical from gallium-67 citrate.

Codes related to A9556

Related codes aren’t interchangeable: bill the code that matches the service performed.

Codes related to A9556
CodeHow it relatesNational office range
Often billed with
78800Tumor imaging, single area, one dayRadiopharmaceutical localization imaging of a limited area may accompany the tracer supply.$200.89–$324.36
78802Tumor imaging, whole body, single dayWhole-body radiopharmaceutical localization imaging may accompany the tracer supply.$234.87–$378.58
78803Tumor SPECT, single body areaTomographic radiopharmaceutical localization imaging may accompany the tracer supply.$292.19–$469.27

A9556 billing questions

What does one unit of A9556 represent?

One unit represents one millicurie of gallium Ga-67 citrate. Report units based on the amount billed in millicuries.

Is A9556 the code for the gallium imaging procedure?

No. A9556 identifies the gallium-67 citrate radiopharmaceutical; the nuclear medicine imaging procedure is coded separately.

How does Medicare set payment for A9556?

Its physician fee schedule status is C, so there is no national payment amount. The Medicare Administrative Contractor sets payment for each claim, and coverage is left to the contractor’s judgment.

How is A9556 different from A9552?

A9556 identifies gallium-67 citrate. A9552 identifies fluorine-18 FDG, a different radiopharmaceutical used for PET imaging.

When would A9557 be reported instead?

A9557 identifies technetium-99m bicisate, a different radiopharmaceutical used for brain perfusion imaging. It is not the gallium-67 citrate supply code.

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

Open CMS sourceHow we calculate rates

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