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CPT code 93986: Access mapping, complete unilateral study2026 Medicare rate & RVUs

Reports a complete unilateral duplex mapping of arteries and veins to assess vessel suitability before creation of a hemodialysis access.

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

Medicare pays $148.30 for 93986 nationally in the office.

Medicare rate · 93986

Access mapping, complete unilateral study

Office or facility?

Work RVUs
0.49
Total RVUs
4.44
Global days
XXX

National rate · 2026

$148.30

Office setting, before claim adjustments.

See every locality for 93986 →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 93986 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 93986 covers

Before hemodialysis access creation, duplex mapping surveys arterial inflow and venous outflow vessels in one extremity to help identify suitable anatomy. A vascular laboratory or imaging department typically performs the ultrasound, with a qualified practitioner interpreting the findings. This study evaluates vessels for access planning rather than an existing fistula or graft.

Select 93986 for a complete unilateral study and 93985 for a complete bilateral study. Documentation should identify the side and describe the vessels evaluated and relevant findings for access planning. The service has professional and technical components: modifier 26 identifies interpretation only, modifier TC identifies the technical service, and reporting without either modifier represents the global service. The cardiovascular diagnostic multiple procedure reduction applies to the technical component.

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 93986 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

93986 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

93986 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
93986 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 93986 rate is calculated

Each of 93986’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 · 93986

RVUs × geographic indexes × conversion factor

Office or facility?

Work0.49

0.49 RVUs× 1.000 GPCI

Practice expense3.85

3.85 RVUs× 1.000 GPCI

Malpractice0.10

0.10 RVUs× 1.000 GPCI

Adjusted RVUs

4.4400

Conversion factor

$33.4009

Medicare rate

$148.30

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

Payment rules and modifiers for 93986

The CMS indicators that decide how 93986 is paid alongside other services.

CMS payment indicators · 93986

Access mapping, complete unilateral study

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

93986 without 26 · national office

$148.30

Access mapping, complete unilateral study

93986-26 · Professional component

$23.05

Pays only the interpretation and report.

When to use modifier 26

93986 compared with similar codes

Compare codes · National

4 codes, side by side

Office or facility?

  • 93986

    Access mapping, complete unilateral study0.49 wRVU

    $148.30

  • 93985

    Dialysis access mapping, complete bilateral study0.78 wRVU

    $249.17+$100.87

  • 93990

    Dialysis access scan, existing access evaluation0.49 wRVU

    $144.29−$4.01

  • 93931

    Arterial duplex, unilateral or limited study0.49 wRVU

    $120.91−$27.39

How to choose

93985Dialysis access mappingComplete bilateral study
Choose 93986 for complete unilateral access mapping; choose 93985 when the complete mapping is bilateral.
93990Dialysis access scanExisting access evaluation
93986 maps vessels for access planning before creation. Code 93990 evaluates an established hemodialysis access.
93931Arterial duplexUnilateral or limited study
93931 is a unilateral upper-extremity arterial duplex. Use 93986 for complete access mapping that evaluates vessels for hemodialysis access planning.

Codes related to 93986

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

Codes related to 93986
CodeHow it relatesNational office range
Same family
93985Dialysis access mapping, complete bilateral studyComplete bilateral hemodialysis access mapping; 93986 is the unilateral counterpart.$215.76–$345.51
Used instead
93990Dialysis access scan, existing access evaluationEvaluates an established hemodialysis access rather than mapping vessels before access creation.No office rate

93986 billing questions

When should 93986 be used instead of 93985?

Use 93986 for complete mapping on one side. Use 93985 when the complete mapping is bilateral.

How does 93986 differ from 93990?

93986 is complete vessel mapping for hemodialysis access planning. Code 93990 is used to evaluate an established hemodialysis access.

Which modifier identifies interpretation-only billing?

Append modifier 26 for the professional interpretation. Modifier TC identifies the technical service; billing without either modifier represents the global service.

Does the multiple procedure reduction affect both components?

The cardiovascular diagnostic multiple procedure reduction applies to the technical component of this service.

What should the report document?

Document the side, vessels evaluated, and findings relevant to determining vessel suitability for hemodialysis access creation.

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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