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HCPCS code A9537: Mebrofenin, per study dose, up to 15 mCi2026 Medicare rate & RVUs

Reports technetium-99m mebrofenin supplied for hepatobiliary scintigraphy, including gallbladder and bile-duct evaluation, in a study dose up to 15 millicuries.

CMS RVU26DEffective Oct 1, 2026109 payment localities5.9K Medicare services in 2024

Medicare rate · A9537

Mebrofenin, per study dose, up to 15 mCi

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 A9537 →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 A9537 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 A9537 covers

Technetium-99m mebrofenin is an intravenously administered radiopharmaceutical used for hepatobiliary scintigraphy, commonly called a HIDA scan. Nuclear medicine teams use the study to assess liver uptake and bile flow through the biliary system, including evaluation of the gallbladder and bile ducts. The radiopharmaceutical supply is reported separately from the imaging service when applicable.

A9537 identifies one diagnostic study dose of up to 15 millicuries; it is not a per-millicurie code. Its Medicare physician fee schedule status is C, meaning CMS publishes no national payment and the Medicare Administrative Contractor prices the claim. HCPCS pricing assigns the item to other contractor pricing, and coverage is left to the Medicare contractor's judgment. The imaging procedure, such as hepatobiliary imaging, is reported with its applicable procedure 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 A9537 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

A9537 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

A9537 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
A9537 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 A9537 rate is calculated

Each of A9537’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 · A9537

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 A9537

A9537 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 · A9537

Which rate does Medicare pay?

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

POS 11 · non-facility rate · national

—

A9537 isn’t priced in this setting.

A9537 compared with similar codes

Compare codes · National

4 codes, side by side

Office or facility?

  • A9537

    Mebrofenin, per study dose, up to 15 mCi0 wRVU

    Not priced

  • A9541

    Sulfur colloid, per study dose0 wRVU

    Not priced

  • 78226

    Hepatobiliary imaging, without drug intervention0.72 wRVU

    $284.91

  • 78227

    Hepatobiliary scan, with pharmacologic intervention0.88 wRVU

    $382.77

How to choose

A9541Sulfur colloidPer study dose
A9537 is mebrofenin for hepatobiliary imaging and bile-flow assessment. A9541 is technetium-99m sulfur colloid, a different tracer used for other imaging purposes.
78226Hepatobiliary imagingWithout drug intervention
A9537 reports the radiopharmaceutical supply. 78226 reports the hepatobiliary imaging procedure.
78227Hepatobiliary scanWith pharmacologic intervention
A9537 identifies mebrofenin supply. 78227 identifies hepatobiliary imaging performed with pharmacologic intervention.

Codes related to A9537

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

Codes related to A9537
CodeHow it relatesNational office range
Often billed with
78226Hepatobiliary imaging, without drug interventionHepatobiliary imaging procedure that may be reported with mebrofenin supply.$247.09–$400.13
78227Hepatobiliary scan, with pharmacologic interventionHepatobiliary imaging with pharmacologic intervention; mebrofenin may be the radiopharmaceutical.$331.57–$538.57

A9537 billing questions

Is A9537 the HIDA scan procedure code?

No. A9537 identifies the mebrofenin radiopharmaceutical supply; the hepatobiliary imaging service is reported with its applicable procedure code.

How many units are reported for a dose up to 15 millicuries?

One unit represents one study dose of up to 15 millicuries. The code is not billed as a separate unit for each millicurie.

How does Medicare price A9537?

CMS assigns status C and other contractor pricing: the Medicare Administrative Contractor sets payment for each claim. Coverage is left to that contractor's judgment.

What should the record support?

Documentation should identify the hepatobiliary study and the mebrofenin dose supplied or administered.

Is A9537 interchangeable with technetium-99m sulfur colloid?

No. Mebrofenin is used for hepatobiliary imaging of tracer uptake and bile flow; sulfur colloid is a different radiopharmaceutical used for other imaging purposes.

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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