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

CMS doesn’t publish an office rate for A9556 in California.

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

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 in California

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

29 of 29 payment localities

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.

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.

A9556 compared with similar codes

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.

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