CPT code 93985: Dialysis access mapping, complete bilateral study2026 Medicare rate & RVUs in Delaware

Bilateral duplex mapping evaluates arterial inflow and venous pathways to help plan hemodialysis access creation in a patient needing vascular access.

CMS RVU26DEffective Oct 1, 2026One payment locality17.7K Medicare services in 2024

In Delaware, Medicare pays $246.12 for 93985 in the office.

$246.12Office (non-facility)
Not available in this settingHospital or facility
−1.2%vs the national office rate ($249.17)

Check a contract rate as a % of Medicare · 93985 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 93985 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Delaware
  2. What 93985 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 93985 covers

This duplex ultrasound maps vessels relevant to hemodialysis access on both sides, assessing arterial inflow and the veins and access-related anatomy needed for planning. A vascular sonographer typically acquires the images in a vascular laboratory or imaging department; a qualified physician, such as a radiologist or vascular specialist, interprets the study. It is commonly performed before choosing a site for a dialysis fistula or graft.

Report 93985 for a complete bilateral mapping examination, supported by documentation of the clinical need and the vessels and sides examined. The code is already priced as bilateral, so modifier 50 does not increase payment. The global service is billed without a component modifier; modifier 26 identifies the interpretation, and modifier TC identifies the technical service. When multiple cardiovascular diagnostic procedures are performed, the 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.

How Delaware compares for 93985

Across 109 of 109 payment localities, the office rate for 93985 runs from $215.76 in Arkansas to $345.51 in San Benito County, CA. Delaware pays $246.12. The RVUs are the same everywhere; the geographic indexes change the dollars.

93985 in Delaware vs other payment areas
  1. Delaware · this page$246.12
  2. Los Angeles, CA · California$288.12+$42.00
  3. Washington, DC area · District of Columbia$289.92+$43.80
  4. Miami, FL · Florida$266.77+$20.65
  5. Chicago, IL · Illinois$257.79+$11.67
  6. Manhattan, NY · New York$289.39+$43.27
  7. Alaska · Alaska$273.78+$27.66

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

Every other payment area

93985 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$219.53—
ArkansasArkansas$215.76—
ArizonaArizona$241.61—
Bakersfield, CACalifornia$268.32—
Chico, CACalifornia$267.85—
El Centro, CACalifornia$267.88—
Fresno, CACalifornia$267.85—
Hanford, CACalifornia$267.85—

93985 rates by state

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

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.

$215.76

$306.68

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

View every state and territory as a table
93985 office rate range by state
State / territoryOffice rate rangeLocalities
AK$273.781
AL$219.531
AR$215.761
AZ$241.611
CA$267.85–$345.5129
CO$262.161
CT$267.631
DC$289.921
DE$246.121
FL$242.46–$266.773
GA$226.78–$253.872
GU$276.571
HI$276.571
IA$227.261
ID$228.781
IL$233.45–$259.614
IN$230.381
KS$225.481
KY$224.551
LA$223.93–$237.112
MA$259.96–$291.802
MD$251.57–$289.923
ME$229.63–$245.122
MI$230.99–$245.462
MN$251.481
MO$219.02–$238.743
MS$217.461
MT$249.161
NC$232.551
ND$245.801
NE$228.901
NH$257.381
NJ$270.77–$285.992
NM$232.261
NV$248.441
NY$236.61–$296.805
OH$230.301
OK$224.641
OR$246.61–$272.272
PA$231.03–$259.652
PR$251.481
RI$256.231
SC$231.791
SD$245.401
TN$226.751
TX$229.20–$261.198
UT$235.551
VA$243.80–$289.922
VI$251.481
VT$244.191
WA$259.68–$298.792
WI$236.111
WV$223.131
WY$247.691

See 93985 in every payment locality

How the 93985 rate is calculated

Each of 93985’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 · 93985

RVUs × geographic indexes × conversion factor

Office or facility?

Work0.78

0.78 RVUs× 1.000 GPCI

Practice expense6.51

6.51 RVUs× 1.000 GPCI

Malpractice0.17

0.17 RVUs× 1.000 GPCI

Adjusted RVUs

7.4600

Conversion factor

$33.4009

Medicare rate

$249.17

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

12,350

Code
93985
Physician work
0.78
Practice expense
6.51
Malpractice
0.17

GPCI2026.csv

40

Locality
Delaware
Physician work
1.005
Practice expense
0.988
Malpractice
0.899
Office calculation for 93985 in Delaware
ComponentRVULocality factorAdjusted
Physician work0.78× 1.0050.7839
Practice expense6.51× 0.9886.4319
Malpractice0.17× 0.8990.1528
Total RVUs7.3686
Conversion factor× 33.4009

Office rate, Delaware$246.12

Office: (0.78 × 1.005 + 6.51 × 0.988 + 0.17 × 0.899) × $33.4009 = $246.12

Open 93985 in the RVU calculator

Payment rules and modifiers for 93985

The CMS indicators that decide how 93985 is paid alongside other services.

CMS payment indicators · 93985

Dialysis access mapping, complete bilateral 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)2Already bilateral by definition: paid once at 100%.
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

93985 without 26 · national office

$249.17

Dialysis access mapping, complete bilateral study

93985-26 · Professional component

$37.07

Pays only the interpretation and report.

When to use modifier 26

How 93985 has changed in Delaware

93985 · Office / nonfacility

$246.12

Effective 2026-10-01

The base rate is $9.11 higher than on 2025-10-01, moving from $237.01 to $246.12 (3.8%).

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

    $237.01changed to$246.12

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 0.80 changed to 0.78
    • Practice expense RVU 6.41 changed to 6.51
    • 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

    $245.57changed to$237.01

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 6.47 changed to 6.41
    • Malpractice RVU 0.16 changed to 0.17

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $241.56changed to$245.57

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $253.51changed to$241.56

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 6.48 changed to 6.47
    • 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

    $266.06changed to$253.51

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 6.60 changed to 6.48
    • Malpractice RVU 0.15 changed to 0.16
    • 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

    $278.61changed to$266.06

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 6.89 changed to 6.60

    Held through RVU22B, RVU22C, RVU22D.

  7. October 1, 2021

    RVU21D

    No ratechanged to$278.61

  8. July 1, 2021

    RVU21C

    $278.61changed toNo rate

  9. January 1, 2021

    RVU21A

    $277.04changed to$278.61

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 6.61 changed to 6.89
    • Malpractice RVU 0.12 changed to 0.15
    • 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.

  10. January 1, 2020

    RVU20A

    No ratechanged to$277.04

    Held through RVU20B, RVU20C, RVU20D.

  11. January 1, 2013

    RVU13AR

    Earliest loaded release: No rate

    Held through RVU13B, RVU13C, RVU13D, RVU14A, RVU14B, RVU14C, RVU14D, RVU15A, RVU15B, RVU15C, RVU15D, RVU16A, RVU16B, RVU16C, RVU16D, RVU17A, RVU17B, RVU17C, RVU17D, RVU18AR1, RVU18B, RVU18C, RVU18D, RVU19A, RVU19B, RVU19C, RVU19D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$246.12Not available in this settingRVU26D
2026-07-01$246.12Not available in this settingRVU26C
2026-04-01$246.12Not available in this settingRVU26B
2026-01-01$246.12Not available in this settingRVU26A
2025-10-01$237.01Not available in this settingRVU25D
2025-07-01$237.01Not available in this settingRVU25C
2025-04-01$237.01Not available in this settingRVU25B
2025-01-01$237.01Not available in this settingRVU25A
2024-10-01$245.57Not available in this settingRVU24D
2024-07-01$245.57Not available in this settingRVU24C
2024-04-01$245.57Not available in this settingRVU24B
2024-03-09$245.57Not available in this settingRVU24AR
2024-01-01$241.56Not available in this settingRVU24A
2023-10-01$253.51Not available in this settingRVU23D
2023-07-01$253.51Not available in this settingRVU23C
2023-04-01$253.51Not available in this settingRVU23B
2023-01-01$253.51Not available in this settingRVU23A
2022-10-01$266.06Not available in this settingRVU22D
2022-07-01$266.06Not available in this settingRVU22C
2022-04-01$266.06Not available in this settingRVU22B
2022-01-01$266.06Not available in this settingRVU22A
2021-10-01$278.61Not available in this settingRVU21D
2021-07-01Additional calculation requiredNot available in this settingRVU21C
2021-04-01$278.61Not available in this settingRVU21B
2021-01-01$278.61Not available in this settingRVU21A
2020-10-01$277.04Not available in this settingRVU20D
2020-07-01$277.04Not available in this settingRVU20C
2020-04-01$277.04Not available in this settingRVU20B
2020-01-01$277.04Not available in this settingRVU20A
2019-10-01Not in this releaseNot in this releaseRVU19D
2019-07-01Not in this releaseNot in this releaseRVU19C
2019-04-01Not in this releaseNot in this releaseRVU19B
2019-01-01Not in this releaseNot in this releaseRVU19A
2018-10-01Not in this releaseNot in this releaseRVU18D
2018-07-01Not in this releaseNot in this releaseRVU18C
2018-04-01Not in this releaseNot in this releaseRVU18B
2018-01-01Not in this releaseNot in this releaseRVU18AR1
2017-10-01Not in this releaseNot in this releaseRVU17D
2017-07-01Not in this releaseNot in this releaseRVU17C
2017-04-01Not in this releaseNot in this releaseRVU17B
2017-01-01Not in this releaseNot in this releaseRVU17A
2016-10-01Not in this releaseNot in this releaseRVU16D
2016-07-01Not in this releaseNot in this releaseRVU16C
2016-04-01Not in this releaseNot in this releaseRVU16B
2016-01-01Not in this releaseNot in this releaseRVU16A
2015-10-01Not in this releaseNot in this releaseRVU15D
2015-07-01Not in this releaseNot in this releaseRVU15C
2015-04-01Not in this releaseNot in this releaseRVU15B
2015-01-01Not in this releaseNot in this releaseRVU15A
2014-10-01Not in this releaseNot in this releaseRVU14D
2014-07-01Not in this releaseNot in this releaseRVU14C
2014-04-01Not in this releaseNot in this releaseRVU14B
2014-01-01Not in this releaseNot in this releaseRVU14A
2013-10-01Not in this releaseNot in this releaseRVU13D
2013-07-01Not in this releaseNot in this releaseRVU13C
2013-04-01Not in this releaseNot in this releaseRVU13B
2013-01-01Not in this releaseNot in this releaseRVU13AR

Price 93985 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

93985 billing questions

When should 93985 be selected instead of 93986?

Use 93985 for a complete bilateral hemodialysis-access mapping study. Use 93986 when the complete study is unilateral.

Does 93985 include both arms?

Yes. The code is priced as bilateral, and modifier 50 does not increase payment.

Can the professional and technical services be billed separately?

Yes. Modifier 26 identifies the physician interpretation, and modifier TC identifies the equipment and staff service. Without either modifier, the claim represents the global service.

Does the multiple procedure reduction affect the entire service?

For multiple cardiovascular diagnostic procedures, the reduction applies to the technical component of 93985.

How is 93985 different from 93990?

93985 maps vessels for hemodialysis access planning. Code 93990 evaluates an existing hemodialysis access rather than providing the complete bilateral planning study.

What documentation supports reporting 93985?

Document the access-planning indication, bilateral examination, and the vessels assessed. The record should support that the study was a complete mapping examination.

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 93985PPRRVU2026_Oct_nonQPP.csv, line 12,350 (RVU26D)
Geographic factors for DelawareGPCI2026.csv, line 40 (RVU26D)

Open CMS sourceHow we calculate rates

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