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CPT code 93971: Venous duplex scan, unilateral or limited study2026 Medicare rate & RVUs in Delaware

Duplex ultrasound evaluates veins in one arm or leg, or performs a limited extremity venous examination, often when deep vein thrombosis is suspected.

CMS RVU26DEffective Oct 1, 2026One payment locality1.5M Medicare services in 2024

In Delaware, Medicare pays $114.94 for 93971 in the office.

$114.94Office (non-facility)
Not available in this settingHospital or facility
−1.1%vs the national office rate ($116.24)

Check a contract rate as a % of Medicare · 93971 nationwide

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

We’ll open 93971 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Delaware
  2. What 93971 covers
  3. Compared with other areas
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Related codes
  8. Rate history
  9. Where it applies
  10. Billing questions
  11. Sources

What 93971 covers

Extremity venous duplex combines grayscale imaging and Doppler flow assessment with vein compression and other maneuvers to assess venous patency and flow. A painful, swollen leg or arm with suspected deep vein thrombosis is a common reason for the examination; assessment of known thrombosis or venous reflux may also prompt it. Vascular sonographers obtain images in office vascular labs, emergency departments, and hospital imaging departments. A radiologist, vascular surgeon, or other qualified physician interprets the findings.

Report 93971 for a unilateral extremity venous duplex or a limited study, including a focused bilateral examination; a complete bilateral arm or leg venous examination is 93970. Record which limb and veins were examined, compression and Doppler findings, and any technical limits that prevented full evaluation. When components are billed separately, use modifier 26 for physician interpretation and modifier TC for equipment and staff; bill the global service without a component modifier when both are furnished and billed together. For multiple eligible cardiovascular diagnostic tests performed for the same patient on the same date, Medicare's multiple procedure reduction affects 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.

How Delaware compares for 93971

Across 109 of 109 payment localities, the office rate for 93971 runs from $101.34 in Arkansas to $161.22 in San Benito County, CA. Delaware pays $114.94. The RVUs are the same everywhere; the geographic indexes change the dollars.

93971 in Delaware vs other payment areas
  1. Delaware · this page$114.94
  2. Los Angeles, CA · California$134.55+$19.61
  3. Washington, DC area · District of Columbia$134.99+$20.05
  4. Miami, FL · Florida$122.88+$7.94
  5. Chicago, IL · Illinois$119.00+$4.06
  6. Manhattan, NY · New York$134.33+$19.39
  7. Alaska · Alaska$129.32+$14.38

Other areas in Delaware first, then benchmark localities. Bars start at $0.

Every other payment area

93971 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$103.03—
ArkansasArkansas$101.34—
ArizonaArizona$112.90—
Bakersfield, CACalifornia$125.45—
Chico, CACalifornia$125.30—
El Centro, CACalifornia$125.31—
Fresno, CACalifornia$125.30—
Hanford, CACalifornia$125.30—

93971 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.

$101.34

$143.26

Color shows the midpoint of each state’s locality range.

View every state and territory as a table
93971 office rate range by state
State / territoryOffice rate rangeLocalities
AK$129.321
AL$103.031
AR$101.341
AZ$112.901
CA$125.30–$161.2229
CO$122.441
CT$124.571
DC$134.991
DE$114.941
FL$112.68–$122.883
GA$105.77–$118.212
GU$129.211
HI$129.211
IA$106.741
ID$107.371
IL$108.49–$120.324
IN$108.091
KS$105.821
KY$105.011
LA$104.68–$110.572
MA$121.42–$136.032
MD$117.44–$134.993
ME$107.61–$114.722
MI$107.76–$113.892
MN$117.961
MO$102.41–$111.443
MS$101.921
MT$116.231
NC$108.941
ND$115.241
NE$107.511
NH$120.121
NJ$126.17–$133.252
NM$108.281
NV$116.061
NY$110.75–$137.485
OH$107.561
OK$105.181
OR$115.34–$127.132
PA$107.95–$120.922
PR$117.311
RI$119.631
SC$108.391
SD$115.131
TN$106.371
TX$107.13–$121.878
UT$110.071
VA$114.05–$134.992
VI$117.311
VT$114.411
WA$121.32–$139.332
WI$110.881
WV$103.871
WY$115.801

See 93971 in every payment locality

How the 93971 rate is calculated

Each of 93971’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 · 93971

RVUs × geographic indexes × conversion factor

Office or facility?

Work0.44

0.44 RVUs× 1.000 GPCI

Practice expense2.99

2.99 RVUs× 1.000 GPCI

Malpractice0.05

0.05 RVUs× 1.000 GPCI

Adjusted RVUs

3.4800

Conversion factor

$33.4009

Medicare rate

$116.24

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

The exact Delaware inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

12,329

Code
93971
Physician work
0.44
Practice expense
2.99
Malpractice
0.05

GPCI2026.csv

40

Locality
Delaware
Physician work
1.005
Practice expense
0.988
Malpractice
0.899
Office calculation for 93971 in Delaware
ComponentRVULocality factorAdjusted
Physician work0.44× 1.0050.4422
Practice expense2.99× 0.9882.9541
Malpractice0.05× 0.8990.0450
Total RVUs3.4413
Conversion factor× 33.4009

Office rate, Delaware$114.94

Office: (0.44 × 1.005 + 2.99 × 0.988 + 0.05 × 0.899) × $33.4009 = $114.94

Open 93971 in the RVU calculator

Payment rules and modifiers for 93971

The CMS indicators that decide how 93971 is paid alongside other services.

CMS payment indicators · 93971

Venous duplex scan, unilateral or limited 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

93971 without 26 · national office

$116.24

Venous duplex scan, unilateral or limited study

93971-26 · Professional component

$20.37

Pays only the interpretation and report.

When to use modifier 26

Codes related to 93971

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

Codes related to 93971
CodeHow it relatesOffice range, Delaware
Same family
93970Venous duplex scan, complete bilateral extremity studyComplete bilateral extremity venous duplex, rather than a unilateral or limited examination.$181.95
Used instead
93985Dialysis access mapping, complete bilateral studyComplete bilateral arterial and venous vessel assessment before hemodialysis access creation.$246.12
93986Access mapping, complete unilateral studyUnilateral or limited arterial and venous vessel assessment before hemodialysis access creation.No office rate

How 93971 has changed in Delaware

93971 · Office / nonfacility

$114.94

Effective 2026-10-01

The base rate is $1.17 higher than on 2025-10-01, moving from $113.77 to $114.94 (1.0%).

It is unchanged from the immediately preceding available release, effective 2026-07-01.

Base rate by release · bars start at $0 · select a bar to compare

One bar per available release, ordered by effective date. Missing rates remain gaps. These comparisons hold the code, setting and locality identifiers constant; they do not isolate which policy or input caused a change.

What changed, release by release

  1. January 1, 2026

    RVU26A

    $113.77changed to$114.94

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 0.45 changed to 0.44
    • Practice expense RVU 3.04 changed to 2.99
    • Work GPCI 1.009 changed to 1.005
    • Practice expense GPCI 0.992 changed to 0.988
    • Malpractice GPCI 0.949 changed to 0.899

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $118.07changed to$113.77

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 3.07 changed to 3.04

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $116.14changed to$118.07

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $122.03changed to$116.14

    • Conversion factor 33.8872 changed to 32.7442
    • Malpractice RVU 0.06 changed to 0.05
    • Work GPCI 1.007 changed to 1.009
    • Practice expense GPCI 1.007 changed to 0.992
    • Malpractice GPCI 0.938 changed to 0.949

  5. January 1, 2023

    RVU23A

    $126.51changed to$122.03

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 3.08 changed to 3.07
    • Work GPCI 1.005 changed to 1.007
    • Practice expense GPCI 1.022 changed to 1.007
    • Malpractice GPCI 0.927 changed to 0.938

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $128.30changed to$126.51

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 3.11 changed to 3.08
    • Malpractice RVU 0.05 changed to 0.06

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $126.51changed to$128.30

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 2.95 changed to 3.11
    • Malpractice RVU 0.04 changed to 0.05
    • Work GPCI 1.006 changed to 1.005
    • Practice expense GPCI 1.021 changed to 1.022
    • Malpractice GPCI 1.023 changed to 0.927

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $125.58changed to$126.51

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 2.92 changed to 2.95
    • Malpractice RVU 0.05 changed to 0.04
    • Work GPCI 1.007 changed to 1.006
    • Practice expense GPCI 1.019 changed to 1.021
    • Malpractice GPCI 1.119 changed to 1.023

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $126.18changed to$125.58

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 2.94 changed to 2.92

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $124.94changed to$126.18

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 2.91 changed to 2.94
    • Malpractice RVU 0.04 changed to 0.05
    • Work GPCI 1.010 changed to 1.007
    • Practice expense GPCI 1.025 changed to 1.019
    • Malpractice GPCI 1.101 changed to 1.119

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $126.40changed to$124.94

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 2.93 changed to 2.91
    • Malpractice RVU 0.05 changed to 0.04
    • Work GPCI 1.012 changed to 1.010
    • Practice expense GPCI 1.031 changed to 1.025
    • Malpractice GPCI 1.083 changed to 1.101

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $126.86changed to$126.40

    • Conversion factor 35.9335 changed to 35.8043

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $126.23changed to$126.86

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $118.28changed to$126.23

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 2.70 changed to 2.93
    • Practice expense GPCI 1.038 changed to 1.031
    • Malpractice GPCI 0.878 changed to 1.083

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $121.07changed to$118.28

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 2.94 changed to 2.70
    • Practice expense GPCI 1.044 changed to 1.038
    • Malpractice GPCI 0.672 changed to 0.878

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $121.07

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$114.94Not available in this settingRVU26D
2026-07-01$114.94Not available in this settingRVU26C
2026-04-01$114.94Not available in this settingRVU26B
2026-01-01$114.94Not available in this settingRVU26A
2025-10-01$113.77Not available in this settingRVU25D
2025-07-01$113.77Not available in this settingRVU25C
2025-04-01$113.77Not available in this settingRVU25B
2025-01-01$113.77Not available in this settingRVU25A
2024-10-01$118.07Not available in this settingRVU24D
2024-07-01$118.07Not available in this settingRVU24C
2024-04-01$118.07Not available in this settingRVU24B
2024-03-09$118.07Not available in this settingRVU24AR
2024-01-01$116.14Not available in this settingRVU24A
2023-10-01$122.03Not available in this settingRVU23D
2023-07-01$122.03Not available in this settingRVU23C
2023-04-01$122.03Not available in this settingRVU23B
2023-01-01$122.03Not available in this settingRVU23A
2022-10-01$126.51Not available in this settingRVU22D
2022-07-01$126.51Not available in this settingRVU22C
2022-04-01$126.51Not available in this settingRVU22B
2022-01-01$126.51Not available in this settingRVU22A
2021-10-01$128.30Not available in this settingRVU21D
2021-07-01$128.30Not available in this settingRVU21C
2021-04-01$128.30Not available in this settingRVU21B
2021-01-01$128.30Not available in this settingRVU21A
2020-10-01$126.51Not available in this settingRVU20D
2020-07-01$126.51Not available in this settingRVU20C
2020-04-01$126.51Not available in this settingRVU20B
2020-01-01$126.51Not available in this settingRVU20A
2019-10-01$125.58Not available in this settingRVU19D
2019-07-01$125.58Not available in this settingRVU19C
2019-04-01$125.58Not available in this settingRVU19B
2019-01-01$125.58Not available in this settingRVU19A
2018-10-01$126.18Not available in this settingRVU18D
2018-07-01$126.18Not available in this settingRVU18C
2018-04-01$126.18Not available in this settingRVU18B
2018-01-01$126.18Not available in this settingRVU18AR1
2017-10-01$124.94Not available in this settingRVU17D
2017-07-01$124.94Not available in this settingRVU17C
2017-04-01$124.94Not available in this settingRVU17B
2017-01-01$124.94Not available in this settingRVU17A
2016-10-01$126.40Not available in this settingRVU16D
2016-07-01$126.40Not available in this settingRVU16C
2016-04-01$126.40Not available in this settingRVU16B
2016-01-01$126.40Not available in this settingRVU16A
2015-10-01$126.86Not available in this settingRVU15D
2015-07-01$126.86Not available in this settingRVU15C
2015-04-01$126.23Not available in this settingRVU15B
2015-01-01$126.23Not available in this settingRVU15A
2014-10-01$118.28Not available in this settingRVU14D
2014-07-01$118.28Not available in this settingRVU14C
2014-04-01$118.28Not available in this settingRVU14B
2014-01-01$118.28Not available in this settingRVU14A
2013-10-01$121.07Not available in this settingRVU13D
2013-07-01$121.07Not available in this settingRVU13C
2013-04-01$121.07Not available in this settingRVU13B
2013-01-01$121.07Not available in this settingRVU13AR

Price 93971 for an earlier date of service

Where the Delaware rate applies

Delaware is a Medicare payment area, not a city. Our Census mapping connects it to 79 cities and communities in Delaware. Some span more than one payment area; confirm with the service ZIP.

  • Arden
  • Ardencroft
  • Ardentown
  • Bear
  • Bellefonte
  • Bethany Beach
  • Bethel
  • Blades

Browse all communities in Delaware

93971 billing questions

When should 93970 be reported instead of 93971?

Use 93970 when a complete duplex evaluation of the veins of both arms or both legs is performed and documented. Report a unilateral or limited bilateral examination with 93971.

Can 93971 be used for arterial duplex of a leg?

No. 93971 describes an extremity venous duplex examination. Lower extremity arterial duplex examinations are reported with 93925 or 93926; upper extremity arterial duplex examinations are reported with 93930 or 93931.

How are the technical and interpretation components reported separately?

When billing split components, the provider billing for equipment and staff uses modifier TC, while the interpreting physician uses modifier 26 and documents the interpretation in a signed report. An entity billing for both components reports the global service without a component modifier.

Does a multiple procedure reduction affect this study?

When multiple eligible cardiovascular diagnostic tests are performed for the same patient on the same date, Medicare's cardiovascular diagnostic multiple procedure reduction affects the technical component of eligible services.

What documentation supports a limited study?

The report should identify the extremity and veins examined, document compression and Doppler findings, and state the clinical reason for the exam, such as leg swelling or suspected deep vein thrombosis. Document why any intended segment could not be evaluated.

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

Show the CMS file lines behind this rate
RVUs for 93971PPRRVU2026_Oct_nonQPP.csv, line 12,329 (RVU26D)
Geographic factors for DelawareGPCI2026.csv, line 40 (RVU26D)

Open CMS sourceHow we calculate rates

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