CPT code 74181: Abdominal MRI, without contrast2026 Medicare rate & RVUs in Riverside, CA
Reports MRI imaging of the abdomen performed without contrast, such as evaluation of abdominal organs when the diagnostic protocol calls for noncontrast images.
In Riverside, CA, Medicare pays $207.89 for 74181 in the office.
Check a contract rate as a % of Medicare · 74181 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 74181 covers
This service covers magnetic resonance imaging of the abdomen using a protocol without contrast material. Radiologists interpret the images; imaging departments, hospitals, and independent diagnostic centers may furnish the technical service. Common clinical questions include assessment of abdominal organs such as the liver, pancreas, kidneys, or adrenal glands when noncontrast imaging is the requested protocol.
Select this code when the documented examination is limited to the abdomen and performed without contrast. The order and radiology report should support the body region and contrast protocol. Report the global service when one entity furnishes both the interpretation and imaging; use modifier 26 for the professional interpretation or TC for the technical service when those portions are billed separately. CMS applies the diagnostic imaging multiple procedure reduction to both professional and technical components when it applies to the reported services.
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 Riverside, CA compares for 74181
Across 109 of 109 payment localities, the office rate for 74181 runs from $172.06 in Arkansas to $260.88 in San Benito County, CA. Riverside, CA pays $207.89. The RVUs are the same everywhere; the geographic indexes change the dollars.
- Riverside, CA · this page$207.89
- Bakersfield, CA · California$207.21−$0.68
- Chico, CA · California$206.89−$1.00
- El Centro, CA · California$206.91−$0.98
- Fresno, CA · California$206.89−$1.00
- Hanford, CA · California$206.89−$1.00
- Los Angeles, CA · California$220.88+$12.99
Other areas in California first, then benchmark localities. Bars start at $0.
Every other payment area
| Payment locality | Office | Facility |
|---|---|---|
| Madera, CACalifornia | $206.89 | — |
| Merced, CACalifornia | $206.89 | — |
| Modesto, CACalifornia | $206.89 | — |
| Napa, CACalifornia | $240.80 | — |
| Oxnard, CACalifornia | $220.00 | — |
| Redding, CACalifornia | $206.89 | — |
| Rest of CaliforniaCalifornia | $206.89 | — |
| Sacramento, CACalifornia | $217.39 | — |
| Salinas, CACalifornia | $216.58 | — |
| San Diego, CACalifornia | $221.86 | — |
| Marin County, CACalifornia | $255.35 | — |
| San Francisco, CACalifornia | $255.25 | — |
| San Benito County, CACalifornia | $260.88 | — |
| Santa Clara County, CACalifornia | $260.46 | — |
| San Luis Obispo, CACalifornia | $213.05 | — |
| Santa Cruz, CACalifornia | $224.13 | — |
| Santa Maria, CACalifornia | $217.44 | — |
| Santa Rosa, CACalifornia | $226.42 | — |
| Stockton, CACalifornia | $206.89 | — |
| Vallejo, CACalifornia | $240.65 | — |
| Visalia, CACalifornia | $206.89 | — |
| Yuba City, CACalifornia | $206.89 | — |
| Washington, DC areaDistrict of Columbia | $222.13 | — |
| Miami, FLFlorida | $204.20 | — |
| Chicago, ILIllinois | $198.67 | — |
| Manhattan, NYNew York | $221.74 | — |
| AlaskaAlaska | $225.40 | — |
| AlabamaAlabama | $174.51 | — |
| ArkansasArkansas | $172.06 | — |
| ArizonaArizona | $188.85 | — |
| ColoradoColorado | $202.81 | — |
| ConnecticutConnecticut | $206.34 | — |
| DelawareDelaware | $191.94 | — |
| Fort Lauderdale, FLFlorida | $198.02 | — |
| Rest of FloridaFlorida | $188.93 | — |
| Atlanta, GAGeorgia | $196.76 | — |
| Rest of GeorgiaGeorgia | $178.83 | — |
| Hawaii, Guam, HIHawaii | $212.09 | — |
| IowaIowa | $179.73 | — |
| IdahoIdaho | $180.68 | — |
| East St. Louis, ILIllinois | $185.31 | — |
| Rest of IllinoisIllinois | $182.95 | — |
| Suburban Chicago, ILIllinois | $200.25 | — |
| IndianaIndiana | $181.72 | — |
| KansasKansas | $178.48 | — |
| KentuckyKentucky | $177.56 | — |
| New Orleans, LALouisiana | $185.68 | — |
| Rest of LouisianaLouisiana | $177.12 | — |
| Metropolitan Boston, MAMassachusetts | $223.14 | — |
| Rest of MassachusettsMassachusetts | $201.47 | — |
| Baltimore area, MDMaryland | $205.66 | — |
| Rest of MarylandMaryland | $195.67 | — |
| Rest of MaineMaine | $181.13 | — |
| Southern Maine, MEMaine | $191.33 | — |
| Detroit, MIMichigan | $190.77 | — |
| Rest of MichiganMichigan | $181.65 | — |
| MinnesotaMinnesota | $195.76 | — |
| Metropolitan Kansas City, MOMissouri | $184.92 | — |
| Metropolitan St. Louis, MOMissouri | $186.85 | — |
| Rest of MissouriMissouri | $173.87 | — |
| MississippiMississippi | $173.02 | — |
| MontanaMontana | $193.72 | — |
| North CarolinaNorth Carolina | $183.04 | — |
| North DakotaNorth Dakota | $191.94 | — |
| NebraskaNebraska | $180.82 | — |
| New HampshireNew Hampshire | $199.22 | — |
| Northern New JerseyNew Jersey | $219.84 | — |
| Rest of New JerseyNew Jersey | $209.10 | — |
| New MexicoNew Mexico | $182.44 | — |
| NevadaNevada | $193.37 | — |
| NYC suburbs and Long Island, NYNew York | $226.42 | — |
| Poughkeepsie and northern NYC suburbs, NYNew York | $210.10 | — |
| Queens, NYNew York | $224.17 | — |
| Rest of New YorkNew York | $185.67 | — |
| OhioOhio | $181.28 | — |
| OklahomaOklahoma | $177.72 | — |
| Portland, OROregon | $209.62 | — |
| Rest of OregonOregon | $192.26 | — |
| Metropolitan Philadelphia, PAPennsylvania | $201.03 | — |
| Rest of PennsylvaniaPennsylvania | $181.81 | — |
| Puerto RicoPuerto Rico | $195.26 | — |
| Rhode IslandRhode Island | $199.03 | — |
| South CarolinaSouth Carolina | $182.38 | — |
| South DakotaSouth Dakota | $191.73 | — |
| TennesseeTennessee | $179.29 | — |
| Austin, TXTexas | $201.79 | — |
| Beaumont, TXTexas | $180.62 | — |
| Brazoria, TXTexas | $192.15 | — |
| Dallas, TXTexas | $193.15 | — |
| Fort Worth, TXTexas | $191.76 | — |
| Galveston, TXTexas | $192.58 | — |
| Houston, TXTexas | $194.23 | — |
| Rest of TexasTexas | $186.13 | — |
| UtahUtah | $184.82 | — |
| VirginiaVirginia | $190.41 | — |
| Virgin Islands, VIUnited States Virgin Islands | $195.26 | — |
| VermontVermont | $190.81 | — |
| Rest of WashingtonWashington | $201.22 | — |
| King County, WAWashington | $228.07 | — |
| WisconsinWisconsin | $185.63 | — |
| West VirginiaWest Virginia | $176.25 | — |
| WyomingWyoming | $192.94 | — |
74181 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.
$172.06
$233.89
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 | $225.40 | 1 |
| AL | $174.51 | 1 |
| AR | $172.06 | 1 |
| AZ | $188.85 | 1 |
| CA | $206.89–$260.88 | 29 |
| CO | $202.81 | 1 |
| CT | $206.34 | 1 |
| DC | $222.13 | 1 |
| DE | $191.94 | 1 |
| FL | $188.93–$204.20 | 3 |
| GA | $178.83–$196.76 | 2 |
| GU | $212.09 | 1 |
| HI | $212.09 | 1 |
| IA | $179.73 | 1 |
| ID | $180.68 | 1 |
| IL | $182.95–$200.25 | 4 |
| IN | $181.72 | 1 |
| KS | $178.48 | 1 |
| KY | $177.56 | 1 |
| LA | $177.12–$185.68 | 2 |
| MA | $201.47–$223.14 | 2 |
| MD | $195.67–$222.13 | 3 |
| ME | $181.13–$191.33 | 2 |
| MI | $181.65–$190.77 | 2 |
| MN | $195.76 | 1 |
| MO | $173.87–$186.85 | 3 |
| MS | $173.02 | 1 |
| MT | $193.72 | 1 |
| NC | $183.04 | 1 |
| ND | $191.94 | 1 |
| NE | $180.82 | 1 |
| NH | $199.22 | 1 |
| NJ | $209.10–$219.84 | 2 |
| NM | $182.44 | 1 |
| NV | $193.37 | 1 |
| NY | $185.67–$226.42 | 5 |
| OH | $181.28 | 1 |
| OK | $177.72 | 1 |
| OR | $192.26–$209.62 | 2 |
| PA | $181.81–$201.03 | 2 |
| PR | $195.26 | 1 |
| RI | $199.03 | 1 |
| SC | $182.38 | 1 |
| SD | $191.73 | 1 |
| TN | $179.29 | 1 |
| TX | $180.62–$201.79 | 8 |
| UT | $184.82 | 1 |
| VA | $190.41–$222.13 | 2 |
| VI | $195.26 | 1 |
| VT | $190.81 | 1 |
| WA | $201.22–$228.07 | 2 |
| WI | $185.63 | 1 |
| WV | $176.25 | 1 |
| WY | $192.94 | 1 |
How the 74181 rate is calculated
Each of 74181’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 · 74181
RVUs × geographic indexes × conversion factor
Work1.42
1.42 RVUs× 1.000 GPCI
Practice expense4.29
4.29 RVUs× 1.000 GPCI
Malpractice0.09
0.09 RVUs× 1.000 GPCI
Adjusted RVUs
5.8000
Conversion factor
$33.4009
Medicare rate
$193.73
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
The exact Riverside, CA inputs and CMS source lines
PPRRVU2026_Oct_nonQPP.csv
8,324
- Code
- 74181
- Physician work
- 1.42
- Practice expense
- 4.29
- Malpractice
- 0.09
GPCI2026.csv
20
- Locality
- Riverside, CA
- Physician work
- 1.018
- Practice expense
- 1.096
- Malpractice
- 0.853
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 1.42 | × 1.018 | 1.4456 |
| Practice expense | 4.29 | × 1.096 | 4.7018 |
| Malpractice | 0.09 | × 0.853 | 0.0768 |
| Total RVUs | 6.2242 | ||
| Conversion factor | × 33.4009 | ||
Office rate, Riverside, CA$207.89
Office: (1.42 × 1.018 + 4.29 × 1.096 + 0.09 × 0.853) × $33.4009 = $207.89
Payment rules and modifiers for 74181
The CMS indicators that decide how 74181 is paid alongside other services.
CMS payment indicators · 74181
Abdominal MRI, without contrast
| Rule | CMS value | What it means |
|---|---|---|
| Global period | XXX | The global surgery concept doesn’t apply. |
| Multiple procedures | 4 | Diagnostic imaging reduction applies to the technical component (and professional component) of additional services. |
| 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
74181 without 26 · national office
$193.73
Abdominal MRI, without contrast
74181-26 · Professional component
$66.47
Pays only the interpretation and report.
How 74181 has changed in Riverside, CA
74181 · Office / nonfacility
$207.89
Effective 2026-10-01
The base rate is $1.85 higher than on 2025-10-01, moving from $206.04 to $207.89 (0.9%).
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
$206.04changed to$207.89
- Conversion factor 32.3465 changed to 33.4009
- Work RVU 1.46 changed to 1.42
- Practice expense RVU 4.40 changed to 4.29
- Work GPCI 1.014 changed to 1.018
- Practice expense GPCI 1.093 changed to 1.096
- Malpractice GPCI 0.892 changed to 0.853
Held through RVU26B, RVU26C, RVU26D.
January 1, 2025
RVU25A
$215.25changed to$206.04
- Conversion factor 33.2875 changed to 32.3465
- Practice expense RVU 4.48 changed to 4.40
- Malpractice RVU 0.10 changed to 0.09
Held through RVU25B, RVU25C, RVU25D.
March 9, 2024
RVU24AR
$211.73changed to$215.25
- Conversion factor 32.7442 changed to 33.2875
Held through RVU24B, RVU24C, RVU24D.
January 1, 2024
RVU24A
$220.74changed to$211.73
- Conversion factor 33.8872 changed to 32.7442
- Practice expense RVU 4.57 changed to 4.48
- Work GPCI 1.021 changed to 1.014
- Practice expense GPCI 1.079 changed to 1.093
- Malpractice GPCI 0.924 changed to 0.892
January 1, 2023
RVU23A
$224.40changed to$220.74
- Conversion factor 34.6062 changed to 33.8872
- Practice expense RVU 4.60 changed to 4.57
- Malpractice RVU 0.09 changed to 0.10
- Work GPCI 1.027 changed to 1.021
- Practice expense GPCI 1.065 changed to 1.079
- Malpractice GPCI 0.955 changed to 0.924
Held through RVU23B, RVU23C, RVU23D.
January 1, 2022
RVU22A
$235.11changed to$224.40
- Conversion factor 34.8931 changed to 34.6062
- Practice expense RVU 4.86 changed to 4.60
- Malpractice RVU 0.07 changed to 0.09
- Malpractice GPCI 0.896 changed to 0.955
Held through RVU22B, RVU22C, RVU22D.
January 1, 2021
RVU21A
$241.62changed to$235.11
- Conversion factor 36.0896 changed to 34.8931
- Practice expense RVU 4.79 changed to 4.86
- Malpractice RVU 0.09 changed to 0.07
- Work GPCI 1.024 changed to 1.027
- Practice expense GPCI 1.070 changed to 1.065
- Malpractice GPCI 0.830 changed to 0.896
Held through RVU21B, RVU21C, RVU21D.
January 1, 2020
RVU20A
$262.47changed to$241.62
- Conversion factor 36.0391 changed to 36.0896
- Practice expense RVU 5.33 changed to 4.79
- Work GPCI 1.021 changed to 1.024
- Practice expense GPCI 1.074 changed to 1.070
- Malpractice GPCI 0.753 changed to 0.830
Held through RVU20B, RVU20C, RVU20D.
January 1, 2019
RVU19A
$305.22changed to$262.47
- Conversion factor 35.9996 changed to 36.0391
- Practice expense RVU 6.45 changed to 5.33
- Work GPCI 1.020 changed to 1.021
- Malpractice GPCI 0.689 changed to 0.753
Held through RVU19B, RVU19C, RVU19D.
January 1, 2018
RVU18AR1
No ratechanged to$305.22
Held through RVU18B, RVU18C, RVU18D.
January 1, 2017
RVU17A
No ratechanged toNo rate
Held through RVU17B, RVU17C, RVU17D.
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.
| Effective from | Office | Facility | CMS release |
|---|---|---|---|
| 2026-10-01 | $207.89 | Not available in this setting | RVU26D |
| 2026-07-01 | $207.89 | Not available in this setting | RVU26C |
| 2026-04-01 | $207.89 | Not available in this setting | RVU26B |
| 2026-01-01 | $207.89 | Not available in this setting | RVU26A |
| 2025-10-01 | $206.04 | Not available in this setting | RVU25D |
| 2025-07-01 | $206.04 | Not available in this setting | RVU25C |
| 2025-04-01 | $206.04 | Not available in this setting | RVU25B |
| 2025-01-01 | $206.04 | Not available in this setting | RVU25A |
| 2024-10-01 | $215.25 | Not available in this setting | RVU24D |
| 2024-07-01 | $215.25 | Not available in this setting | RVU24C |
| 2024-04-01 | $215.25 | Not available in this setting | RVU24B |
| 2024-03-09 | $215.25 | Not available in this setting | RVU24AR |
| 2024-01-01 | $211.73 | Not available in this setting | RVU24A |
| 2023-10-01 | $220.74 | Not available in this setting | RVU23D |
| 2023-07-01 | $220.74 | Not available in this setting | RVU23C |
| 2023-04-01 | $220.74 | Not available in this setting | RVU23B |
| 2023-01-01 | $220.74 | Not available in this setting | RVU23A |
| 2022-10-01 | $224.40 | Not available in this setting | RVU22D |
| 2022-07-01 | $224.40 | Not available in this setting | RVU22C |
| 2022-04-01 | $224.40 | Not available in this setting | RVU22B |
| 2022-01-01 | $224.40 | Not available in this setting | RVU22A |
| 2021-10-01 | $235.11 | Not available in this setting | RVU21D |
| 2021-07-01 | $235.11 | Not available in this setting | RVU21C |
| 2021-04-01 | $235.11 | Not available in this setting | RVU21B |
| 2021-01-01 | $235.11 | Not available in this setting | RVU21A |
| 2020-10-01 | $241.62 | Not available in this setting | RVU20D |
| 2020-07-01 | $241.62 | Not available in this setting | RVU20C |
| 2020-04-01 | $241.62 | Not available in this setting | RVU20B |
| 2020-01-01 | $241.62 | Not available in this setting | RVU20A |
| 2019-10-01 | $262.47 | Not available in this setting | RVU19D |
| 2019-07-01 | $262.47 | Not available in this setting | RVU19C |
| 2019-04-01 | $262.47 | Not available in this setting | RVU19B |
| 2019-01-01 | $262.47 | Not available in this setting | RVU19A |
| 2018-10-01 | $305.22 | Not available in this setting | RVU18D |
| 2018-07-01 | $305.22 | Not available in this setting | RVU18C |
| 2018-04-01 | $305.22 | Not available in this setting | RVU18B |
| 2018-01-01 | $305.22 | Not available in this setting | RVU18AR1 |
| 2017-10-01 | Additional calculation required | Not available in this setting | RVU17D |
| 2017-07-01 | Additional calculation required | Not available in this setting | RVU17C |
| 2017-04-01 | Additional calculation required | Not available in this setting | RVU17B |
| 2017-01-01 | Additional calculation required | Not available in this setting | RVU17A |
| 2016-10-01 | Rate data unavailable | Not available in this setting | RVU16D |
| 2016-07-01 | Rate data unavailable | Not available in this setting | RVU16C |
| 2016-04-01 | Rate data unavailable | Not available in this setting | RVU16B |
| 2016-01-01 | Rate data unavailable | Not available in this setting | RVU16A |
| 2015-10-01 | Rate data unavailable | Not available in this setting | RVU15D |
| 2015-07-01 | Rate data unavailable | Not available in this setting | RVU15C |
| 2015-04-01 | Rate data unavailable | Not available in this setting | RVU15B |
| 2015-01-01 | Rate data unavailable | Not available in this setting | RVU15A |
| 2014-10-01 | Rate data unavailable | Not available in this setting | RVU14D |
| 2014-07-01 | Rate data unavailable | Not available in this setting | RVU14C |
| 2014-04-01 | Rate data unavailable | Not available in this setting | RVU14B |
| 2014-01-01 | Rate data unavailable | Not available in this setting | RVU14A |
| 2013-10-01 | Rate data unavailable | Not available in this setting | RVU13D |
| 2013-07-01 | Rate data unavailable | Not available in this setting | RVU13C |
| 2013-04-01 | Rate data unavailable | Not available in this setting | RVU13B |
| 2013-01-01 | Rate data unavailable | Not available in this setting | RVU13AR |
Where the Riverside, CA rate applies
Riverside, CA is a Medicare payment area, not a city. Our Census mapping connects it to 127 cities and communities in California. Some span more than one payment area; confirm with the service ZIP.
- Ontario
- Riverside
- San Bernardino
- Adelanto
- Aguanga
- Anza
- Apple Valley
- Baker
74181 billing questions
How does 74181 differ from 74182?
74181 is for abdominal MRI performed without contrast. Use 74182 when the abdominal MRI is performed with contrast.
When is 74183 reported instead?
74183 describes an abdominal MRI performed first without contrast and then with contrast. It is not the code for a noncontrast-only examination.
Can the professional interpretation and imaging be billed separately?
Yes. Modifier 26 identifies the professional interpretation, and modifier TC identifies the technical service; billing without either modifier represents the global service.
What documentation supports 74181?
The order and imaging report should identify the abdomen as the imaged region and support that the examination was performed without contrast.
Can multiple procedure reduction affect this code?
CMS diagnostic imaging multiple procedure reduction applies to the professional and technical components when multiple diagnostic imaging procedures are reported.
Should 74181 be used for an abdominal CT?
No. 74181 describes MRI. For an abdominal CT without contrast, consider 74150 when that modality and protocol match the service performed.
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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