CPT code 73580: Knee arthrography, radiographic contrast study2026 Medicare rate & RVUs in Colorado
Reports radiographic imaging and interpretation of a contrast study of the knee joint, typically performed after contrast is introduced into the joint.
In Colorado, Medicare pays $122.98 for 73580 in the office.
Check a contract rate as a % of Medicare · 73580 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 73580 covers
This service covers radiographic imaging and interpretation of a knee arthrogram: contrast is introduced into the joint, and images are obtained to assess its internal structures. A radiologist typically interprets the study; imaging staff acquire the images, and a physician may perform the joint injection. It is distinct from routine knee x-rays without intra-articular contrast and from an MRI arthrogram.
Report 73580 for the radiographic arthrogram service, supported by documentation identifying the knee, the contrast study, the images obtained, and the interpretation. The contrast injection is commonly reported separately with 27370. CMS prices the professional interpretation with modifier 26 and the equipment-and-staff service with modifier TC; billing without either modifier represents the global service. When both knees are examined, CMS pays each side separately at 100%.
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 Colorado compares for 73580
Across 109 of 109 payment localities, the office rate for 73580 runs from $102.52 in Arkansas to $160.20 in San Benito County, CA. Colorado pays $122.98. The RVUs are the same everywhere; the geographic indexes change the dollars.
- Colorado · this page$122.98
- Los Angeles, CA · California$134.55+$11.57
- Washington, DC area · District of Columbia$135.53+$12.55
- Miami, FL · Florida$125.23+$2.25
- Chicago, IL · Illinois$121.31−$1.67
- Manhattan, NY · New York$135.46+$12.48
- Alaska · Alaska$131.91+$8.93
Other areas in Colorado first, then benchmark localities. Bars start at $0.
Every other payment area
| Payment locality | Office | Facility |
|---|---|---|
| AlabamaAlabama | $104.18 | — |
| ArkansasArkansas | $102.52 | — |
| ArizonaArizona | $113.90 | — |
| Bakersfield, CACalifornia | $125.70 | — |
| Chico, CACalifornia | $125.47 | — |
| El Centro, CACalifornia | $125.48 | — |
| Fresno, CACalifornia | $125.47 | — |
| Hanford, CACalifornia | $125.47 | — |
| Madera, CACalifornia | $125.47 | — |
| Merced, CACalifornia | $125.47 | — |
| Modesto, CACalifornia | $125.47 | — |
| Napa, CACalifornia | $147.41 | — |
| Oxnard, CACalifornia | $134.10 | — |
| Redding, CACalifornia | $125.47 | — |
| Rest of CaliforniaCalifornia | $125.47 | — |
| Riverside, CACalifornia | $126.33 | — |
| Sacramento, CACalifornia | $132.21 | — |
| Salinas, CACalifornia | $131.73 | — |
| San Diego, CACalifornia | $135.25 | — |
| Marin County, CACalifornia | $156.66 | — |
| San Francisco, CACalifornia | $156.57 | — |
| San Benito County, CACalifornia | $160.20 | — |
| Santa Clara County, CACalifornia | $159.83 | — |
| San Luis Obispo, CACalifornia | $129.56 | — |
| Santa Cruz, CACalifornia | $136.87 | — |
| Santa Maria, CACalifornia | $132.34 | — |
| Santa Rosa, CACalifornia | $138.28 | — |
| Stockton, CACalifornia | $125.47 | — |
| Vallejo, CACalifornia | $147.28 | — |
| Visalia, CACalifornia | $125.47 | — |
| Yuba City, CACalifornia | $125.47 | — |
| ConnecticutConnecticut | $125.52 | — |
| DelawareDelaware | $115.92 | — |
| Fort Lauderdale, FLFlorida | $120.63 | — |
| Rest of FloridaFlorida | $114.39 | — |
| Atlanta, GAGeorgia | $119.36 | — |
| Rest of GeorgiaGeorgia | $107.47 | — |
| Hawaii, Guam, HIHawaii | $129.15 | — |
| IowaIowa | $107.53 | — |
| IdahoIdaho | $108.21 | — |
| East St. Louis, ILIllinois | $112.33 | — |
| Rest of IllinoisIllinois | $110.46 | — |
| Suburban Chicago, ILIllinois | $122.01 | — |
| IndianaIndiana | $108.91 | — |
| KansasKansas | $106.77 | — |
| KentuckyKentucky | $106.44 | — |
| New Orleans, LALouisiana | $111.98 | — |
| Rest of LouisianaLouisiana | $106.18 | — |
| Metropolitan Boston, MAMassachusetts | $136.20 | — |
| Rest of MassachusettsMassachusetts | $122.05 | — |
| Baltimore area, MDMaryland | $125.13 | — |
| Rest of MarylandMaryland | $118.35 | — |
| Rest of MaineMaine | $108.61 | — |
| Southern Maine, MEMaine | $115.39 | — |
| Detroit, MIMichigan | $115.74 | — |
| Rest of MichiganMichigan | $109.30 | — |
| MinnesotaMinnesota | $118.12 | — |
| Metropolitan Kansas City, MOMissouri | $111.37 | — |
| Metropolitan St. Louis, MOMissouri | $112.67 | — |
| Rest of MissouriMissouri | $104.03 | — |
| MississippiMississippi | $103.31 | — |
| MontanaMontana | $117.23 | — |
| North CarolinaNorth Carolina | $109.89 | — |
| North DakotaNorth Dakota | $115.65 | — |
| NebraskaNebraska | $108.25 | — |
| New HampshireNew Hampshire | $120.81 | — |
| Northern New JerseyNew Jersey | $133.87 | — |
| Rest of New JerseyNew Jersey | $127.03 | — |
| New MexicoNew Mexico | $109.87 | — |
| NevadaNevada | $116.89 | — |
| NYC suburbs and Long Island, NYNew York | $138.76 | — |
| Poughkeepsie and northern NYC suburbs, NYNew York | $127.71 | — |
| Queens, NYNew York | $136.98 | — |
| Rest of New YorkNew York | $111.68 | — |
| OhioOhio | $108.98 | — |
| OklahomaOklahoma | $106.46 | — |
| Portland, OROregon | $127.43 | — |
| Rest of OregonOregon | $116.06 | — |
| Metropolitan Philadelphia, PAPennsylvania | $122.00 | — |
| Rest of PennsylvaniaPennsylvania | $109.28 | — |
| Puerto RicoPuerto Rico | $118.24 | — |
| Rhode IslandRhode Island | $120.46 | — |
| South CarolinaSouth Carolina | $109.60 | — |
| South DakotaSouth Dakota | $115.46 | — |
| TennesseeTennessee | $107.34 | — |
| Austin, TXTexas | $122.49 | — |
| Beaumont, TXTexas | $108.48 | — |
| Brazoria, TXTexas | $115.95 | — |
| Dallas, TXTexas | $116.65 | — |
| Fort Worth, TXTexas | $115.73 | — |
| Galveston, TXTexas | $116.27 | — |
| Houston, TXTexas | $117.73 | — |
| Rest of TexasTexas | $112.12 | — |
| UtahUtah | $111.25 | — |
| VirginiaVirginia | $114.83 | — |
| Virgin Islands, VIUnited States Virgin Islands | $118.24 | — |
| VermontVermont | $114.97 | — |
| Rest of WashingtonWashington | $121.90 | — |
| King County, WAWashington | $139.33 | — |
| WisconsinWisconsin | $111.39 | — |
| West VirginiaWest Virginia | $105.92 | — |
| WyomingWyoming | $116.54 | — |
73580 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.
$102.52
$142.83
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 | $131.91 | 1 |
| AL | $104.18 | 1 |
| AR | $102.52 | 1 |
| AZ | $113.90 | 1 |
| CA | $125.47–$160.20 | 29 |
| CO | $122.98 | 1 |
| CT | $125.52 | 1 |
| DC | $135.53 | 1 |
| DE | $115.92 | 1 |
| FL | $114.39–$125.23 | 3 |
| GA | $107.47–$119.36 | 2 |
| GU | $129.15 | 1 |
| HI | $129.15 | 1 |
| IA | $107.53 | 1 |
| ID | $108.21 | 1 |
| IL | $110.46–$122.01 | 4 |
| IN | $108.91 | 1 |
| KS | $106.77 | 1 |
| KY | $106.44 | 1 |
| LA | $106.18–$111.98 | 2 |
| MA | $122.05–$136.20 | 2 |
| MD | $118.35–$135.53 | 3 |
| ME | $108.61–$115.39 | 2 |
| MI | $109.30–$115.74 | 2 |
| MN | $118.12 | 1 |
| MO | $104.03–$112.67 | 3 |
| MS | $103.31 | 1 |
| MT | $117.23 | 1 |
| NC | $109.89 | 1 |
| ND | $115.65 | 1 |
| NE | $108.25 | 1 |
| NH | $120.81 | 1 |
| NJ | $127.03–$133.87 | 2 |
| NM | $109.87 | 1 |
| NV | $116.89 | 1 |
| NY | $111.68–$138.76 | 5 |
| OH | $108.98 | 1 |
| OK | $106.46 | 1 |
| OR | $116.06–$127.43 | 2 |
| PA | $109.28–$122.00 | 2 |
| PR | $118.24 | 1 |
| RI | $120.46 | 1 |
| SC | $109.60 | 1 |
| SD | $115.46 | 1 |
| TN | $107.34 | 1 |
| TX | $108.48–$122.49 | 8 |
| UT | $111.25 | 1 |
| VA | $114.83–$135.53 | 2 |
| VI | $118.24 | 1 |
| VT | $114.97 | 1 |
| WA | $121.90–$139.33 | 2 |
| WI | $111.39 | 1 |
| WV | $105.92 | 1 |
| WY | $116.54 | 1 |
How the 73580 rate is calculated
Each of 73580’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 · 73580
RVUs × geographic indexes × conversion factor
Work0.58
0.58 RVUs× 1.000 GPCI
Practice expense2.85
2.85 RVUs× 1.000 GPCI
Malpractice0.08
0.08 RVUs× 1.000 GPCI
Adjusted RVUs
3.5100
Conversion factor
$33.4009
Medicare rate
$117.24
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
The exact Colorado inputs and CMS source lines
PPRRVU2026_Oct_nonQPP.csv
8,225
- Code
- 73580
- Physician work
- 0.58
- Practice expense
- 2.85
- Malpractice
- 0.08
GPCI2026.csv
37
- Locality
- Colorado
- Physician work
- 1.012
- Practice expense
- 1.064
- Malpractice
- 0.781
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.58 | × 1.012 | 0.5870 |
| Practice expense | 2.85 | × 1.064 | 3.0324 |
| Malpractice | 0.08 | × 0.781 | 0.0625 |
| Total RVUs | 3.6818 | ||
| Conversion factor | × 33.4009 | ||
Office rate, Colorado$122.98
Office: (0.58 × 1.012 + 2.85 × 1.064 + 0.08 × 0.781) × $33.4009 = $122.98
Payment rules and modifiers for 73580
The CMS indicators that decide how 73580 is paid alongside other services.
CMS payment indicators · 73580
Knee arthrography, radiographic contrast study
| Rule | CMS value | What it means |
|---|---|---|
| Global period | XXX | The global surgery concept doesn’t apply. |
| Multiple procedures | 0 | No multiple-procedure reduction. |
| Bilateral (modifier 50) | 3 | Each side paid at 100% (no 150% cap). |
| 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
73580 without 26 · national office
$117.24
Knee arthrography, radiographic contrast study
73580-26 · Professional component
$31.73
Pays only the interpretation and report.
How 73580 has changed in Colorado
73580 · Office / nonfacility
$122.98
Effective 2026-10-01
The base rate is $14.33 higher than on 2025-10-01, moving from $108.65 to $122.98 (13.2%).
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
$108.65changed to$122.98
- Conversion factor 32.3465 changed to 33.4009
- Work RVU 0.59 changed to 0.58
- Practice expense RVU 2.57 changed to 2.85
- Malpractice RVU 0.07 changed to 0.08
- Work GPCI 1.008 changed to 1.012
- Practice expense GPCI 1.053 changed to 1.064
- Malpractice GPCI 0.827 changed to 0.781
Held through RVU26B, RVU26C, RVU26D.
January 1, 2025
RVU25A
$114.96changed to$108.65
- Conversion factor 33.2875 changed to 32.3465
- Practice expense RVU 2.66 changed to 2.57
Held through RVU25B, RVU25C, RVU25D.
March 9, 2024
RVU24AR
$113.09changed to$114.96
- Conversion factor 32.7442 changed to 33.2875
Held through RVU24B, RVU24C, RVU24D.
January 1, 2024
RVU24A
$135.13changed to$113.09
- Conversion factor 33.8872 changed to 32.7442
- Practice expense RVU 3.18 changed to 2.66
- Work GPCI 1.005 changed to 1.008
- Practice expense GPCI 1.050 changed to 1.053
- Malpractice GPCI 0.797 changed to 0.827
January 1, 2023
RVU23A
$160.33changed to$135.13
- Conversion factor 34.6062 changed to 33.8872
- Work RVU 0.54 changed to 0.59
- Practice expense RVU 3.85 changed to 3.18
- Malpractice RVU 0.08 changed to 0.07
- Work GPCI 1.001 changed to 1.005
- Practice expense GPCI 1.047 changed to 1.050
- Malpractice GPCI 0.767 changed to 0.797
Held through RVU23B, RVU23C, RVU23D.
January 1, 2022
RVU22A
$154.91changed to$160.33
- Conversion factor 34.8931 changed to 34.6062
- Practice expense RVU 3.68 changed to 3.85
- Malpractice RVU 0.06 changed to 0.08
Held through RVU22B, RVU22C, RVU22D.
January 1, 2021
RVU21A
$142.24changed to$154.91
- Conversion factor 36.0896 changed to 34.8931
- Practice expense RVU 3.24 changed to 3.68
- Work GPCI 1.000 changed to 1.001
- Practice expense GPCI 1.033 changed to 1.047
- Malpractice GPCI 0.905 changed to 0.767
Held through RVU21B, RVU21C, RVU21D.
January 1, 2020
RVU20A
$131.41changed to$142.24
- Conversion factor 36.0391 changed to 36.0896
- Practice expense RVU 2.99 changed to 3.24
- Practice expense GPCI 1.018 changed to 1.033
- Malpractice GPCI 1.042 changed to 0.905
Held through RVU20B, RVU20C, RVU20D.
January 1, 2019
RVU19A
$121.01changed to$131.41
- Conversion factor 35.9996 changed to 36.0391
- Practice expense RVU 2.71 changed to 2.99
Held through RVU19B, RVU19C, RVU19D.
January 1, 2018
RVU18AR1
$116.73changed to$121.01
- Conversion factor 35.8887 changed to 35.9996
- Practice expense RVU 2.62 changed to 2.71
- Malpractice RVU 0.05 changed to 0.06
- Practice expense GPCI 1.015 changed to 1.018
- Malpractice GPCI 1.066 changed to 1.042
Held through RVU18B, RVU18C, RVU18D.
January 1, 2017
RVU17A
$117.21changed to$116.73
- Conversion factor 35.8043 changed to 35.8887
- Practice expense RVU 2.65 changed to 2.62
- Practice expense GPCI 1.011 changed to 1.015
- Malpractice GPCI 1.090 changed to 1.066
Held through RVU17B, RVU17C, RVU17D.
January 1, 2016
RVU16A
$116.88changed to$117.21
- Conversion factor 35.9335 changed to 35.8043
- Practice expense RVU 2.64 changed to 2.65
- Malpractice RVU 0.04 changed to 0.05
Held through RVU16B, RVU16C, RVU16D.
July 1, 2015
RVU15C
$116.30changed to$116.88
- Conversion factor 35.7547 changed to 35.9335
Held through RVU15D.
January 1, 2015
RVU15A
$130.14changed to$116.30
- Conversion factor 35.8228 changed to 35.7547
- Practice expense RVU 3.01 changed to 2.64
- Malpractice RVU 0.06 changed to 0.04
- Practice expense GPCI 1.008 changed to 1.011
- Malpractice GPCI 0.981 changed to 1.090
Held through RVU15B.
January 1, 2014
RVU14A
$135.27changed to$130.14
- Conversion factor 34.0230 changed to 35.8228
- Practice expense RVU 3.37 changed to 3.01
- Practice expense GPCI 1.004 changed to 1.008
- Malpractice GPCI 0.872 changed to 0.981
Held through RVU14B, RVU14C, RVU14D.
January 1, 2013
RVU13AR
Earliest loaded release: $135.27
Held through RVU13B, RVU13C, RVU13D.
| Effective from | Office | Facility | CMS release |
|---|---|---|---|
| 2026-10-01 | $122.98 | Not available in this setting | RVU26D |
| 2026-07-01 | $122.98 | Not available in this setting | RVU26C |
| 2026-04-01 | $122.98 | Not available in this setting | RVU26B |
| 2026-01-01 | $122.98 | Not available in this setting | RVU26A |
| 2025-10-01 | $108.65 | Not available in this setting | RVU25D |
| 2025-07-01 | $108.65 | Not available in this setting | RVU25C |
| 2025-04-01 | $108.65 | Not available in this setting | RVU25B |
| 2025-01-01 | $108.65 | Not available in this setting | RVU25A |
| 2024-10-01 | $114.96 | Not available in this setting | RVU24D |
| 2024-07-01 | $114.96 | Not available in this setting | RVU24C |
| 2024-04-01 | $114.96 | Not available in this setting | RVU24B |
| 2024-03-09 | $114.96 | Not available in this setting | RVU24AR |
| 2024-01-01 | $113.09 | Not available in this setting | RVU24A |
| 2023-10-01 | $135.13 | Not available in this setting | RVU23D |
| 2023-07-01 | $135.13 | Not available in this setting | RVU23C |
| 2023-04-01 | $135.13 | Not available in this setting | RVU23B |
| 2023-01-01 | $135.13 | Not available in this setting | RVU23A |
| 2022-10-01 | $160.33 | Not available in this setting | RVU22D |
| 2022-07-01 | $160.33 | Not available in this setting | RVU22C |
| 2022-04-01 | $160.33 | Not available in this setting | RVU22B |
| 2022-01-01 | $160.33 | Not available in this setting | RVU22A |
| 2021-10-01 | $154.91 | Not available in this setting | RVU21D |
| 2021-07-01 | $154.91 | Not available in this setting | RVU21C |
| 2021-04-01 | $154.91 | Not available in this setting | RVU21B |
| 2021-01-01 | $154.91 | Not available in this setting | RVU21A |
| 2020-10-01 | $142.24 | Not available in this setting | RVU20D |
| 2020-07-01 | $142.24 | Not available in this setting | RVU20C |
| 2020-04-01 | $142.24 | Not available in this setting | RVU20B |
| 2020-01-01 | $142.24 | Not available in this setting | RVU20A |
| 2019-10-01 | $131.41 | Not available in this setting | RVU19D |
| 2019-07-01 | $131.41 | Not available in this setting | RVU19C |
| 2019-04-01 | $131.41 | Not available in this setting | RVU19B |
| 2019-01-01 | $131.41 | Not available in this setting | RVU19A |
| 2018-10-01 | $121.01 | Not available in this setting | RVU18D |
| 2018-07-01 | $121.01 | Not available in this setting | RVU18C |
| 2018-04-01 | $121.01 | Not available in this setting | RVU18B |
| 2018-01-01 | $121.01 | Not available in this setting | RVU18AR1 |
| 2017-10-01 | $116.73 | Not available in this setting | RVU17D |
| 2017-07-01 | $116.73 | Not available in this setting | RVU17C |
| 2017-04-01 | $116.73 | Not available in this setting | RVU17B |
| 2017-01-01 | $116.73 | Not available in this setting | RVU17A |
| 2016-10-01 | $117.21 | Not available in this setting | RVU16D |
| 2016-07-01 | $117.21 | Not available in this setting | RVU16C |
| 2016-04-01 | $117.21 | Not available in this setting | RVU16B |
| 2016-01-01 | $117.21 | Not available in this setting | RVU16A |
| 2015-10-01 | $116.88 | Not available in this setting | RVU15D |
| 2015-07-01 | $116.88 | Not available in this setting | RVU15C |
| 2015-04-01 | $116.30 | Not available in this setting | RVU15B |
| 2015-01-01 | $116.30 | Not available in this setting | RVU15A |
| 2014-10-01 | $130.14 | Not available in this setting | RVU14D |
| 2014-07-01 | $130.14 | Not available in this setting | RVU14C |
| 2014-04-01 | $130.14 | Not available in this setting | RVU14B |
| 2014-01-01 | $130.14 | Not available in this setting | RVU14A |
| 2013-10-01 | $135.27 | Not available in this setting | RVU13D |
| 2013-07-01 | $135.27 | Not available in this setting | RVU13C |
| 2013-04-01 | $135.27 | Not available in this setting | RVU13B |
| 2013-01-01 | $135.27 | Not available in this setting | RVU13AR |
Where the Colorado rate applies
Colorado is a Medicare payment area, not a city. Our Census mapping connects it to 485 cities and communities in Colorado. Some span more than one payment area; confirm with the service ZIP.
- Acres Green
- Aetna Estates
- Aguilar
- Air Force Academy
- Akron
- Alamosa
- Alamosa East
- Allenspark
73580 billing questions
How does 73580 differ from routine knee x-rays?
73580 is for radiographic imaging and interpretation of a knee arthrogram using contrast introduced into the joint. Routine knee x-ray codes describe noncontrast examinations and are selected by the number of views.
Is the contrast injection included in 73580?
The injection is commonly reported separately with 27370. Keep documentation clear about the injection and the radiographic arthrogram service.
When should modifier 26 or TC be used?
Use modifier 26 for the professional interpretation and modifier TC for the technical service, including equipment and staff. Without either modifier, 73580 represents the global service.
How is bilateral knee arthrography paid?
CMS pays each side separately at 100% when both knees are examined. Document which knee was studied and report the services for each side.
What documentation supports 73580?
The record should identify the knee, document that the examination used intra-articular contrast, and support the radiographic imaging and interpretation. The report should reflect the arthrogram 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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