CPT code 93979: Vascular duplex, limited abdominal study2026 Medicare rate & RVUs in Detroit, MI
Reports a focused duplex ultrasound assessment of abdominal aortic, caval, iliac, or related bypass-graft vasculature rather than a complete study.
In Detroit, MI, Medicare pays $114.99 for 93979 in the office.
Check a contract rate as a % of Medicare · 93979 nationwide
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
On this page 11 sections
What 93979 covers
This code represents a limited duplex ultrasound assessment of the aorta, inferior vena cava, iliac vessels, or a related bypass graft. The exam uses ultrasound imaging and Doppler flow analysis to evaluate the specified vascular area. Vascular laboratories, radiology departments, and physician offices may perform the study for a focused clinical question, such as follow-up of a known abdominal vascular abnormality or assessment of a graft. The documented anatomy and scope distinguish a limited study from a complete examination.
Report the code when the performed study is limited in scope; the record should identify the vessel or graft examined, the clinical indication, and the findings supporting the evaluation. CMS recognizes professional and technical components: report modifier 26 for interpretation only, modifier TC for equipment and staff, or no component modifier for the global service. The cardiovascular diagnostic multiple procedure reduction applies to the technical component when applicable. The global service includes both components.
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 Detroit, MI compares for 93979
Across 109 of 109 payment localities, the office rate for 93979 runs from $101.52 in Arkansas to $160.24 in San Benito County, CA. Detroit, MI pays $114.99. The RVUs are the same everywhere; the geographic indexes change the dollars.
- Detroit, MI · this page$114.99
- Rest of Michigan · Michigan$108.43−$6.56
- Los Angeles, CA · California$134.19+$19.20
- Washington, DC area · District of Columbia$135.12+$20.13
- Miami, FL · Florida$124.65+$9.66
- Chicago, IL · Illinois$120.63+$5.64
- Manhattan, NY · New York$134.98+$19.99
Other areas in Michigan first, then benchmark localities. Bars start at $0.
Every other payment area
| Payment locality | Office | Facility |
|---|---|---|
| AlaskaAlaska | $129.89 | — |
| AlabamaAlabama | $103.22 | — |
| ArkansasArkansas | $101.52 | — |
| ArizonaArizona | $113.16 | — |
| Bakersfield, CACalifornia | $125.20 | — |
| Chico, CACalifornia | $124.97 | — |
| El Centro, CACalifornia | $124.98 | — |
| Fresno, CACalifornia | $124.97 | — |
| Hanford, CACalifornia | $124.97 | — |
| Madera, CACalifornia | $124.97 | — |
| Merced, CACalifornia | $124.97 | — |
| Modesto, CACalifornia | $124.97 | — |
| Napa, CACalifornia | $147.30 | — |
| Oxnard, CACalifornia | $133.77 | — |
| Redding, CACalifornia | $124.97 | — |
| Rest of CaliforniaCalifornia | $124.97 | — |
| Riverside, CACalifornia | $125.83 | — |
| Sacramento, CACalifornia | $131.82 | — |
| Salinas, CACalifornia | $131.34 | — |
| San Diego, CACalifornia | $134.95 | — |
| Marin County, CACalifornia | $156.67 | — |
| San Francisco, CACalifornia | $156.58 | — |
| San Benito County, CACalifornia | $160.24 | — |
| Santa Clara County, CACalifornia | $159.87 | — |
| San Luis Obispo, CACalifornia | $129.16 | — |
| Santa Cruz, CACalifornia | $136.64 | — |
| Santa Maria, CACalifornia | $131.98 | — |
| Santa Rosa, CACalifornia | $138.06 | — |
| Stockton, CACalifornia | $124.97 | — |
| Vallejo, CACalifornia | $147.17 | — |
| Visalia, CACalifornia | $124.97 | — |
| Yuba City, CACalifornia | $124.97 | — |
| ColoradoColorado | $122.42 | — |
| ConnecticutConnecticut | $124.97 | — |
| DelawareDelaware | $115.21 | — |
| Fort Lauderdale, FLFlorida | $120.00 | — |
| Rest of FloridaFlorida | $113.62 | — |
| Atlanta, GAGeorgia | $118.72 | — |
| Rest of GeorgiaGeorgia | $106.55 | — |
| Hawaii, Guam, HIHawaii | $128.81 | — |
| IowaIowa | $106.67 | — |
| IdahoIdaho | $107.36 | — |
| East St. Louis, ILIllinois | $111.48 | — |
| Rest of IllinoisIllinois | $109.59 | — |
| Suburban Chicago, ILIllinois | $121.38 | — |
| IndianaIndiana | $108.08 | — |
| KansasKansas | $105.88 | — |
| KentuckyKentucky | $105.52 | — |
| New Orleans, LALouisiana | $111.18 | — |
| Rest of LouisianaLouisiana | $105.24 | — |
| Metropolitan Boston, MAMassachusetts | $135.87 | — |
| Rest of MassachusettsMassachusetts | $121.46 | — |
| Baltimore area, MDMaryland | $124.58 | — |
| Rest of MarylandMaryland | $117.68 | — |
| Rest of MaineMaine | $107.76 | — |
| Southern Maine, MEMaine | $114.71 | — |
| MinnesotaMinnesota | $117.52 | — |
| Metropolitan Kansas City, MOMissouri | $110.56 | — |
| Metropolitan St. Louis, MOMissouri | $111.89 | — |
| Rest of MissouriMissouri | $103.04 | — |
| MississippiMississippi | $102.31 | — |
| MontanaMontana | $116.56 | — |
| North CarolinaNorth Carolina | $109.07 | — |
| North DakotaNorth Dakota | $114.98 | — |
| NebraskaNebraska | $107.40 | — |
| New HampshireNew Hampshire | $120.23 | — |
| Northern New JerseyNew Jersey | $133.39 | — |
| Rest of New JerseyNew Jersey | $126.46 | — |
| New MexicoNew Mexico | $109.01 | — |
| NevadaNevada | $116.22 | — |
| NYC suburbs and Long Island, NYNew York | $138.34 | — |
| Poughkeepsie and northern NYC suburbs, NYNew York | $127.13 | — |
| Queens, NYNew York | $136.55 | — |
| Rest of New YorkNew York | $110.90 | — |
| OhioOhio | $108.11 | — |
| OklahomaOklahoma | $105.54 | — |
| Portland, OROregon | $126.97 | — |
| Rest of OregonOregon | $115.39 | — |
| Metropolitan Philadelphia, PAPennsylvania | $121.38 | — |
| Rest of PennsylvaniaPennsylvania | $108.42 | — |
| Puerto RicoPuerto Rico | $117.60 | — |
| Rhode IslandRhode Island | $119.81 | — |
| South CarolinaSouth Carolina | $108.76 | — |
| South DakotaSouth Dakota | $114.79 | — |
| TennesseeTennessee | $106.46 | — |
| Austin, TXTexas | $121.95 | — |
| Beaumont, TXTexas | $107.60 | — |
| Brazoria, TXTexas | $115.23 | — |
| Dallas, TXTexas | $115.95 | — |
| Fort Worth, TXTexas | $115.01 | — |
| Galveston, TXTexas | $115.56 | — |
| Houston, TXTexas | $117.02 | — |
| Rest of TexasTexas | $111.34 | — |
| UtahUtah | $110.44 | — |
| VirginiaVirginia | $114.13 | — |
| Virgin Islands, VIUnited States Virgin Islands | $117.60 | — |
| VermontVermont | $114.27 | — |
| Rest of WashingtonWashington | $121.31 | — |
| King County, WAWashington | $139.04 | — |
| WisconsinWisconsin | $110.62 | — |
| West VirginiaWest Virginia | $104.94 | — |
| WyomingWyoming | $115.87 | — |
93979 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.
$101.52
$142.61
Color shows the midpoint of each state’s locality range.
View every state and territory as a table
| State / territory | Office rate range | Localities |
|---|---|---|
| AK | $129.89 | 1 |
| AL | $103.22 | 1 |
| AR | $101.52 | 1 |
| AZ | $113.16 | 1 |
| CA | $124.97–$160.24 | 29 |
| CO | $122.42 | 1 |
| CT | $124.97 | 1 |
| DC | $135.12 | 1 |
| DE | $115.21 | 1 |
| FL | $113.62–$124.65 | 3 |
| GA | $106.55–$118.72 | 2 |
| GU | $128.81 | 1 |
| HI | $128.81 | 1 |
| IA | $106.67 | 1 |
| ID | $107.36 | 1 |
| IL | $109.59–$121.38 | 4 |
| IN | $108.08 | 1 |
| KS | $105.88 | 1 |
| KY | $105.52 | 1 |
| LA | $105.24–$111.18 | 2 |
| MA | $121.46–$135.87 | 2 |
| MD | $117.68–$135.12 | 3 |
| ME | $107.76–$114.71 | 2 |
| MI | $108.43–$114.99 | 2 |
| MN | $117.52 | 1 |
| MO | $103.04–$111.89 | 3 |
| MS | $102.31 | 1 |
| MT | $116.56 | 1 |
| NC | $109.07 | 1 |
| ND | $114.98 | 1 |
| NE | $107.40 | 1 |
| NH | $120.23 | 1 |
| NJ | $126.46–$133.39 | 2 |
| NM | $109.01 | 1 |
| NV | $116.22 | 1 |
| NY | $110.90–$138.34 | 5 |
| OH | $108.11 | 1 |
| OK | $105.54 | 1 |
| OR | $115.39–$126.97 | 2 |
| PA | $108.42–$121.38 | 2 |
| PR | $117.60 | 1 |
| RI | $119.81 | 1 |
| SC | $108.76 | 1 |
| SD | $114.79 | 1 |
| TN | $106.46 | 1 |
| TX | $107.60–$121.95 | 8 |
| UT | $110.44 | 1 |
| VA | $114.13–$135.12 | 2 |
| VI | $117.60 | 1 |
| VT | $114.27 | 1 |
| WA | $121.31–$139.04 | 2 |
| WI | $110.62 | 1 |
| WV | $104.94 | 1 |
| WY | $115.87 | 1 |
How the 93979 rate is calculated
Each of 93979’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 · 93979
RVUs × geographic indexes × conversion factor
Work0.49
0.49 RVUs× 1.000 GPCI
Practice expense2.92
2.92 RVUs× 1.000 GPCI
Malpractice0.08
0.08 RVUs× 1.000 GPCI
Adjusted RVUs
3.4900
Conversion factor
$33.4009
Medicare rate
$116.57
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
The exact Detroit, MI inputs and CMS source lines
PPRRVU2026_Oct_nonQPP.csv
12,341
- Code
- 93979
- Physician work
- 0.49
- Practice expense
- 2.92
- Malpractice
- 0.08
GPCI2026.csv
64
- Locality
- Detroit, MI
- Physician work
- 1.000
- Practice expense
- 0.965
- Malpractice
- 1.686
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.49 | × 1.000 | 0.4900 |
| Practice expense | 2.92 | × 0.965 | 2.8178 |
| Malpractice | 0.08 | × 1.686 | 0.1349 |
| Total RVUs | 3.4427 | ||
| Conversion factor | × 33.4009 | ||
Office rate, Detroit, MI$114.99
Office: (0.49 × 1 + 2.92 × 0.965 + 0.08 × 1.686) × $33.4009 = $114.99
Payment rules and modifiers for 93979
The CMS indicators that decide how 93979 is paid alongside other services.
CMS payment indicators · 93979
Vascular duplex, limited abdominal study
| Rule | CMS value | What it means |
|---|---|---|
| Global period | XXX | The global surgery concept doesn’t apply. |
| Multiple procedures | 6 | Diagnostic cardiovascular reduction applies to the technical component. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 0 | Not paid without supporting documentation. |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 1 | Diagnostic test with separate professional (26) and technical (TC) components. |
What modifiers do to the payment
Modifier 26 · payment effect
With and without the modifier
93979 without 26 · national office
$116.57
Vascular duplex, limited abdominal study
93979-26 · Professional component
$23.05
Pays only the interpretation and report.
How 93979 has changed in Detroit, MI
93979 · Office / nonfacility
$114.99
Effective 2026-10-01
The base rate is $1.75 higher than on 2025-10-01, moving from $113.24 to $114.99 (1.5%).
It is unchanged from the immediately preceding available release, effective 2026-07-01.
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
January 1, 2026
RVU26A
$113.24changed to$114.99
- Conversion factor 32.3465 changed to 33.4009
- Work RVU 0.50 changed to 0.49
- Malpractice RVU 0.07 changed to 0.08
- Work GPCI 1.003 changed to 1.000
- Practice expense GPCI 0.986 changed to 0.965
- Malpractice GPCI 1.718 changed to 1.686
Held through RVU26B, RVU26C, RVU26D.
January 1, 2025
RVU25A
$118.42changed to$113.24
- Conversion factor 33.2875 changed to 32.3465
- Practice expense RVU 2.96 changed to 2.92
- Malpractice RVU 0.08 changed to 0.07
Held through RVU25B, RVU25C, RVU25D.
March 9, 2024
RVU24AR
$116.49changed to$118.42
- Conversion factor 32.7442 changed to 33.2875
Held through RVU24B, RVU24C, RVU24D.
January 1, 2024
RVU24A
$119.51changed to$116.49
- Conversion factor 33.8872 changed to 32.7442
- Practice expense RVU 2.95 changed to 2.96
- Malpractice RVU 0.06 changed to 0.08
- Work GPCI 1.000 changed to 1.003
- Practice expense GPCI 0.992 changed to 0.986
- Malpractice GPCI 1.670 changed to 1.718
January 1, 2023
RVU23A
$123.36changed to$119.51
- Conversion factor 34.6062 changed to 33.8872
- Practice expense RVU 2.96 changed to 2.95
- Malpractice RVU 0.07 changed to 0.06
- Practice expense GPCI 0.997 changed to 0.992
- Malpractice GPCI 1.622 changed to 1.670
Held through RVU23B, RVU23C, RVU23D.
January 1, 2022
RVU22A
$125.77changed to$123.36
- Conversion factor 34.8931 changed to 34.6062
- Practice expense RVU 3.00 changed to 2.96
Held through RVU22B, RVU22C, RVU22D.
January 1, 2021
RVU21A
$124.61changed to$125.77
- Conversion factor 36.0896 changed to 34.8931
- Practice expense RVU 2.84 changed to 3.00
- Malpractice RVU 0.08 changed to 0.07
- Practice expense GPCI 0.993 changed to 0.997
- Malpractice GPCI 1.657 changed to 1.622
Held through RVU21B, RVU21C, RVU21D.
January 1, 2020
RVU20A
$123.15changed to$124.61
- Conversion factor 36.0391 changed to 36.0896
- Practice expense RVU 2.83 changed to 2.84
- Malpractice RVU 0.07 changed to 0.08
- Practice expense GPCI 0.989 changed to 0.993
- Malpractice GPCI 1.691 changed to 1.657
Held through RVU20B, RVU20C, RVU20D.
January 1, 2019
RVU19A
$125.16changed to$123.15
- Conversion factor 35.9996 changed to 36.0391
- Practice expense RVU 2.89 changed to 2.83
Held through RVU19B, RVU19C, RVU19D.
January 1, 2018
RVU18AR1
$122.13changed to$125.16
- Conversion factor 35.8887 changed to 35.9996
- Practice expense RVU 2.82 changed to 2.89
- Practice expense GPCI 0.992 changed to 0.989
- Malpractice GPCI 1.510 changed to 1.691
Held through RVU18B, RVU18C, RVU18D.
January 1, 2017
RVU17A
$122.66changed to$122.13
- Conversion factor 35.8043 changed to 35.8887
- Practice expense RVU 2.85 changed to 2.82
- Practice expense GPCI 0.994 changed to 0.992
- Malpractice GPCI 1.328 changed to 1.510
Held through RVU17B, RVU17C, RVU17D.
January 1, 2016
RVU16A
$122.63changed to$122.66
- Conversion factor 35.9335 changed to 35.8043
- Malpractice RVU 0.06 changed to 0.07
Held through RVU16B, RVU16C, RVU16D.
July 1, 2015
RVU15C
$122.02changed to$122.63
- Conversion factor 35.7547 changed to 35.9335
Held through RVU15D.
January 1, 2015
RVU15A
No ratechanged to$122.02
Held through RVU15B.
January 1, 2013
RVU13AR
Earliest loaded release: No rate
Held through RVU13B, RVU13C, RVU13D, RVU14A, RVU14B, RVU14C, RVU14D.
| Effective from | Office | Facility | CMS release |
|---|---|---|---|
| 2026-10-01 | $114.99 | Not available in this setting | RVU26D |
| 2026-07-01 | $114.99 | Not available in this setting | RVU26C |
| 2026-04-01 | $114.99 | Not available in this setting | RVU26B |
| 2026-01-01 | $114.99 | Not available in this setting | RVU26A |
| 2025-10-01 | $113.24 | Not available in this setting | RVU25D |
| 2025-07-01 | $113.24 | Not available in this setting | RVU25C |
| 2025-04-01 | $113.24 | Not available in this setting | RVU25B |
| 2025-01-01 | $113.24 | Not available in this setting | RVU25A |
| 2024-10-01 | $118.42 | Not available in this setting | RVU24D |
| 2024-07-01 | $118.42 | Not available in this setting | RVU24C |
| 2024-04-01 | $118.42 | Not available in this setting | RVU24B |
| 2024-03-09 | $118.42 | Not available in this setting | RVU24AR |
| 2024-01-01 | $116.49 | Not available in this setting | RVU24A |
| 2023-10-01 | $119.51 | Not available in this setting | RVU23D |
| 2023-07-01 | $119.51 | Not available in this setting | RVU23C |
| 2023-04-01 | $119.51 | Not available in this setting | RVU23B |
| 2023-01-01 | $119.51 | Not available in this setting | RVU23A |
| 2022-10-01 | $123.36 | Not available in this setting | RVU22D |
| 2022-07-01 | $123.36 | Not available in this setting | RVU22C |
| 2022-04-01 | $123.36 | Not available in this setting | RVU22B |
| 2022-01-01 | $123.36 | Not available in this setting | RVU22A |
| 2021-10-01 | $125.77 | Not available in this setting | RVU21D |
| 2021-07-01 | $125.77 | Not available in this setting | RVU21C |
| 2021-04-01 | $125.77 | Not available in this setting | RVU21B |
| 2021-01-01 | $125.77 | Not available in this setting | RVU21A |
| 2020-10-01 | $124.61 | Not available in this setting | RVU20D |
| 2020-07-01 | $124.61 | Not available in this setting | RVU20C |
| 2020-04-01 | $124.61 | Not available in this setting | RVU20B |
| 2020-01-01 | $124.61 | Not available in this setting | RVU20A |
| 2019-10-01 | $123.15 | Not available in this setting | RVU19D |
| 2019-07-01 | $123.15 | Not available in this setting | RVU19C |
| 2019-04-01 | $123.15 | Not available in this setting | RVU19B |
| 2019-01-01 | $123.15 | Not available in this setting | RVU19A |
| 2018-10-01 | $125.16 | Not available in this setting | RVU18D |
| 2018-07-01 | $125.16 | Not available in this setting | RVU18C |
| 2018-04-01 | $125.16 | Not available in this setting | RVU18B |
| 2018-01-01 | $125.16 | Not available in this setting | RVU18AR1 |
| 2017-10-01 | $122.13 | Not available in this setting | RVU17D |
| 2017-07-01 | $122.13 | Not available in this setting | RVU17C |
| 2017-04-01 | $122.13 | Not available in this setting | RVU17B |
| 2017-01-01 | $122.13 | Not available in this setting | RVU17A |
| 2016-10-01 | $122.66 | Not available in this setting | RVU16D |
| 2016-07-01 | $122.66 | Not available in this setting | RVU16C |
| 2016-04-01 | $122.66 | Not available in this setting | RVU16B |
| 2016-01-01 | $122.66 | Not available in this setting | RVU16A |
| 2015-10-01 | $122.63 | Not available in this setting | RVU15D |
| 2015-07-01 | $122.63 | Not available in this setting | RVU15C |
| 2015-04-01 | $122.02 | Not available in this setting | RVU15B |
| 2015-01-01 | $122.02 | Not available in this setting | RVU15A |
| 2014-10-01 | Additional calculation required | Not available in this setting | RVU14D |
| 2014-07-01 | Additional calculation required | Not available in this setting | RVU14C |
| 2014-04-01 | Additional calculation required | Not available in this setting | RVU14B |
| 2014-01-01 | Additional calculation required | Not available in this setting | RVU14A |
| 2013-10-01 | Additional calculation required | Not available in this setting | RVU13D |
| 2013-07-01 | Additional calculation required | Not available in this setting | RVU13C |
| 2013-04-01 | Additional calculation required | Not available in this setting | RVU13B |
| 2013-01-01 | Additional calculation required | Not available in this setting | RVU13AR |
Where the Detroit, MI rate applies
Detroit, MI is a Medicare payment area, not a city. Our Census mapping connects it to 98 cities and communities in Michigan. Some span more than one payment area; confirm with the service ZIP.
- Detroit
- Allen Park
- Ann Arbor
- Armada
- Auburn Hills
- Barton Hills
- Belleville
- Berkley
93979 billing questions
How does this differ from 93978?
93979 represents a limited examination of the relevant abdominal vessels or graft, while 93978 is the complete-study sibling. Use the code that matches the documented scope of the examination.
Can the professional and technical portions be billed separately?
Yes. Modifier 26 identifies the professional interpretation, and modifier TC identifies the technical service. Without either modifier, the claim represents the global service.
When does the multiple procedure reduction affect this code?
CMS applies the cardiovascular diagnostic multiple procedure reduction to the technical component. It does not apply to the professional component.
How is this different from 93975 or 93976?
Those codes describe duplex evaluation of visceral organ vascular flow. Choose 93979 for a limited assessment of the aorta, IVC, iliac vasculature, or a related bypass graft.
What should the report document?
Document the clinical reason for the study, the specific vessel or graft examined, the limited scope of the evaluation, and the duplex findings.
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
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