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CPT code 93892: Emboli detection, without injection2026 Medicare rate & RVUs

Transcranial Doppler monitoring detects embolic signals in intracranial arteries without injection of an intravenous microbubble agent.

CMS RVU26DEffective Oct 1, 2026109 payment localities37.6K Medicare services in 2024

Medicare pays $306.29 for 93892 nationally in the office.

Medicare rate · 93892

Emboli detection, without injection

Office or facility?

Work RVUs
1.12
Total RVUs
9.17
Global days
XXX

National rate · 2026

$306.29

Office setting, before claim adjustments.

See every locality for 93892 →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 93892 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 93892 covers

This study uses transcranial Doppler ultrasound to monitor intracranial arteries for embolic signals without an intravenous microbubble injection. A physician or other qualified clinician may order it when emboli monitoring is needed, such as during evaluation of cerebrovascular disease. The service may be performed in an office, hospital, or other setting with the equipment and staff needed for Doppler monitoring; the interpreting clinician reviews the recorded findings and reports the results.

Report 93892 for the no-injection emboli-detection service, not for a routine complete or limited intracranial flow study. Documentation should identify the clinical reason for monitoring, the vessels assessed, and the findings and interpretation. CMS recognizes professional and technical components: report modifier 26 for interpretation, TC for equipment and staff, or neither modifier for the global service. The cardiovascular diagnostic multiple-procedure reduction applies to the technical component when applicable.

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 93892 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

93892 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

93892 rates by state

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

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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
93892 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 93892 rate is calculated

Each of 93892’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 · 93892

RVUs × geographic indexes × conversion factor

Office or facility?

Work1.12

1.12 RVUs× 1.000 GPCI

Practice expense7.94

7.94 RVUs× 1.000 GPCI

Malpractice0.11

0.11 RVUs× 1.000 GPCI

Adjusted RVUs

9.1700

Conversion factor

$33.4009

Medicare rate

$306.29

Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.

Payment rules and modifiers for 93892

The CMS indicators that decide how 93892 is paid alongside other services.

CMS payment indicators · 93892

Emboli detection, without injection

RuleCMS valueWhat it means
Global periodXXXThe global surgery concept doesn’t apply.
Multiple procedures6Diagnostic cardiovascular reduction applies to the technical component.
Bilateral (modifier 50)0The 150% bilateral adjustment doesn’t apply.
Assistant at surgery (80/81/82/AS)0Not paid without supporting documentation.
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical1Diagnostic test with separate professional (26) and technical (TC) components.

What modifiers do to the payment

Modifier 26 · payment effect

With and without the modifier

93892 without 26 · national office

$306.29

Emboli detection, without injection

93892-26 · Professional component

$58.45

Pays only the interpretation and report.

When to use modifier 26

93892 compared with similar codes

Compare codes · National

4 codes, side by side

Office or facility?

  • 93892

    Emboli detection, without injection1.12 wRVU

    $306.29

  • 93886

    Intracranial Doppler, complete study0.88 wRVU

    $269.88−$36.41

  • 93888

    Transcranial Doppler, limited intracranial study0.71 wRVU

    $170.34−$135.95

  • 93898

    Shunt detection, IV microbubble injection0.83 wRVU

    $262.53−$43.76

How to choose

93886Intracranial DopplerComplete study
Choose 93886 for a complete intracranial Doppler flow study. Choose 93892 when the service monitors intracranial arteries for embolic signals without injection.
93888Transcranial DopplerLimited intracranial study
93888 describes a limited intracranial Doppler study; 93892 describes emboli detection without an intravenous microbubble injection.
93898Shunt detectionIV microbubble injection
93898 is associated with venous-arterial shunt detection using microbubble injection. 93892 is no-injection emboli monitoring, not a shunt assessment.

Codes related to 93892

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

Codes related to 93892
CodeHow it relatesNational office range
Same family
93886Intracranial Doppler, complete studyComplete intracranial Doppler study; assesses intracranial flow rather than embolic signals.$234.94–$376.68
93888Transcranial Doppler, limited intracranial studyLimited intracranial Doppler study, distinct from no-injection emboli monitoring.No office rate

93892 billing questions

How does 93892 differ from a complete intracranial Doppler study?

93892 is for monitoring intracranial arteries for embolic signals without an intravenous microbubble injection. A complete intracranial study assesses flow in the vessels rather than embolic signals.

Which modifier identifies the interpretation?

Use modifier 26 for the professional component, which represents interpretation. Use TC for the technical component; billing without either modifier represents the global service.

Does the multiple-procedure reduction affect both components?

CMS applies the cardiovascular diagnostic multiple-procedure reduction to the technical component.

What should the report document?

Document the reason for emboli monitoring, the intracranial vessels assessed, and the recorded findings and interpretation.

Can 93892 be reported for a microbubble shunt study?

No. 93892 describes emboli detection without an intravenous microbubble injection; a study intended to assess a venous-arterial shunt is a different TCD service.

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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