$36.14
Use 73560 for routine noncontrast knee radiographs with one or two views, not a contrast arthrogram.
On this page
CMS RVU26D · Effective 2026-10-01
73580 Knee arthrography Medicare reimbursement rates in Colorado
Reports radiographic imaging and interpretation of a contrast study of the knee joint, typically performed after contrast is introduced into the joint. Compare 73580 office and facility rates across CMS payment localities in Colorado.
Amounts below use the non-QP conversion factor for participating physicians. These are base physician payments before claim-level adjustments, not patient costs or total hospital charges.
What does Medicare pay for 73580 in Colorado?
Colorado has 1 payment locality in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the payment area shown below, using the same CMS release.
Office / nonfacility
$122.98
1 of 1 localities have a supported rate.
Payment area: Colorado
One mapped payment locality.
Facility setting
No supported rate
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Radiology
About 73580: Knee joint contrast radiographic examination
Reports radiographic imaging and interpretation of a contrast study of the knee joint, typically performed after contrast is introduced into the joint.
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%.
CMS billing rules for 73580
- Professional and technical components
- Diagnostic test with a professional component (modifier 26, interpretation) and a technical component (modifier TC, equipment and staff); billing without a modifier is the global service.
- Bilateral procedures
- Each side is paid separately at 100% when performed bilaterally.
Where the value comes from
- Work RVU0.58 · 17%
- Practice expense (office) RVU2.85 · 81%
- Malpractice RVU0.08 · 2%
12.7K
Medicare services in 2024 · #1351 by national volume
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.
73580 compared with similar codes
Office rates for Colorado, from the same CMS release.
$44.63
73562 describes routine noncontrast knee radiographs with three views; 73580 is for contrast arthrography.
$52.04
73564 describes routine noncontrast knee radiographs with four or more views, while 73580 reports radiographic imaging and interpretation of a contrast study.
Compare 73580 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
1 of 1 payment localities
Colorado →
Office / nonfacility
$122.98
Facility
Unavailable
Need rates for a whole code list?
Fee-sheet and API access are in early access. Tell us which codes and locations your team needs.
How this local rate is calculated
Each RVU component is multiplied by its own geographic practice cost index (GPCI). The three adjusted components are added, then multiplied by the conversion factor. These are the inputs used for 73580 in Colorado.
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 / nonfacility rate, Colorado$122.98
Explore RVUs, geographic factors and the full formula
Office / nonfacility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 0.58 | 1.012 |
| Practice expense | 2.85 | 1.064 |
| Malpractice | 0.08 | 0.781 |
(0.58 × 1.012 + 2.85 × 1.064 + 0.08 × 0.781) × $33.4009 = $122.98
The office and facility calculations use their respective practice-expense RVUs. The facility amount here is the physician fee, not a separate hospital or facility bill.
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 indices and the applicable conversion factor. Unavailable or separately priced services are labeled rather than assigned a made-up amount.
Source: RVU26D. Effective 2026-10-01 through the day before 2027-01-01.
8,22273565,,X-ray exam of knees,A,,0.16,1.08,,1.08,NA,0.02,1.26,1.26,1,XXX,0.00,0.00,0.00,0,2,0,0,0,9,,33.4009,09,0,99,2.72,2.72,0.04
8,22373565,26,X-ray exam of knees,A,,0.16,0.08,,0.08,,0.01,0.25,0.25,1,XXX,0.00,0.00,0.00,0,2,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
8,22473565,TC,X-ray exam of knees,A,,0.00,1.00,,1.00,NA,0.01,1.01,1.01,1,XXX,0.00,0.00,0.00,0,2,0,0,0,9,,33.4009,01,0,99,2.64,2.64,0.03
8,22573580,,Contrast x-ray of knee joint,A,,0.58,2.85,,2.85,NA,0.08,3.51,3.51,1,XXX,0.00,0.00,0.00,0,3,0,0,0,9,,33.4009,09,0,99,10.93,10.93,0.11
8,22673580,26,Contrast x-ray of knee joint,A,,0.58,0.30,,0.30,,0.07,0.95,0.95,1,XXX,0.00,0.00,0.00,0,3,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
8,22773580,TC,Contrast x-ray of knee joint,A,,0.00,2.55,,2.55,NA,0.01,2.56,2.56,1,XXX,0.00,0.00,0.00,0,3,0,0,0,9,,33.4009,03,0,99,10.63,10.63,0.04
8,22873590,,X-ray exam of lower leg,A,,0.16,0.76,,0.76,NA,0.02,0.94,0.94,1,XXX,0.00,0.00,0.00,0,3,0,0,0,9,,33.4009,09,0,99,2.68,2.68,0.05
3401112,CA,69,VISALIA,1.017,1.096,0.536
3501112,CA,70,YUBA CITY,1.017,1.096,0.536
3601112,CA,75,REST OF CALIFORNIA,1.017,1.096,0.536
3704112,CO,01,COLORADO,1.012,1.064,0.781
3813102,CT,00,CONNECTICUT,1.020,1.077,1.210
3912202,DC,01,DC + MD/VA SUBURBS,1.054,1.178,1.113
4012102,DE,01,DELAWARE,1.005,0.988,0.899