$301.85
75574 reports coronary CT angiography. Use 75577 for quantitative plaque analysis based on coronary CTA data, when that analysis is performed and documented.
On this page
CMS RVU26D · Effective 2026-10-01
75577 Coronary plaque analysis Medicare reimbursement rates in Iowa
Reports quantitative assessment of coronary atherosclerotic plaque from coronary CT angiography data, including image processing, interpretation, and a separate report. Compare 75577 office and facility rates across CMS payment localities in Iowa.
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 75577 in Iowa?
Iowa 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
$927.57
1 of 1 localities have a supported rate.
Payment area: Iowa
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.
Cardiac imaging
About 75577: Quantitative coronary plaque analysis
Reports quantitative assessment of coronary atherosclerotic plaque from coronary CT angiography data, including image processing, interpretation, and a separate report.
This service analyzes coronary CT angiography images to quantify atherosclerotic plaque burden and assess plaque characteristics in the coronary arteries. Image-processing software and trained staff support the analysis; a qualified physician interprets the results and documents the findings. It is used in cardiac imaging settings when a clinician seeks a detailed plaque assessment from coronary CTA data, rather than only a visual review of the angiogram or a coronary calcium score.
Report 75577 when the quantitative plaque analysis is performed and its findings are documented in a report. The record should support that coronary CTA data were analyzed and identify the resulting plaque findings. CMS recognizes professional and technical components: modifier 26 identifies the interpretation, while modifier TC identifies the equipment and staff portion. Report the global service without either modifier when one billing entity provides both components.
CMS billing rules for 75577
- 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.
Where the value comes from
- Work RVU0.85 · 3%
- Practice expense (office) RVU29.40 · 97%
- Malpractice RVU0.05 · 0%
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.
75577 compared with similar codes
Office rates for Iowa, from the same CMS release.
$91.83
75571 is a coronary calcium assessment using noncontrast CT; 75577 evaluates plaque using coronary CTA data.
$811.93
75580 analyzes coronary CTA data for a noninvasive physiologic estimate of lesion significance. Code 75577 quantifies coronary plaque.
Compare 75577 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
Iowa →
Office / nonfacility
$927.57
Facility
Unavailable
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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 75577 in Iowa.
PPRRVU2026_Oct_nonQPP.csv
8,495
- Code
- 75577
- Physician work
- 0.85
- Practice expense
- 29.40
- Malpractice
- 0.05
GPCI2026.csv
53
- Locality
- Iowa
- Physician work
- 1.000
- Practice expense
- 0.915
- Malpractice
- 0.397
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.85 | × 1.000 | 0.8500 |
| Practice expense | 29.40 | × 0.915 | 26.9010 |
| Malpractice | 0.05 | × 0.397 | 0.0199 |
| Total RVUs | 27.7709 | ||
| Conversion factor | × 33.4009 | ||
Office / nonfacility rate, Iowa$927.57
Explore RVUs, geographic factors and the full formula
Office / nonfacility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 0.85 | 1 |
| Practice expense | 29.4 | 0.915 |
| Malpractice | 0.05 | 0.397 |
(0.85 × 1 + 29.4 × 0.915 + 0.05 × 0.397) × $33.4009 = $927.57
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.
75577 billing questions
How is 75577 different from coronary CTA code 75574?
75574 represents coronary CT angiography; 75577 is the quantitative plaque analysis performed on coronary CTA data. The documentation should support each service reported.
Is 75577 a calcium score?
No. Code 75577 quantifies plaque using coronary CTA data, while 75571 reports a coronary calcium assessment from a noncontrast cardiac CT.
Can the professional and technical portions be billed separately?
Yes. Use modifier 26 for the professional interpretation and report, or modifier TC for the technical portion. Bill without either modifier for the global service.
What documentation supports 75577?
Document the coronary CTA data analyzed, the quantitative plaque findings, and the interpreting physician’s report. The record should show that a plaque analysis was performed, not only a standard CTA interpretation.
Does 75577 replace 75574?
No. The codes represent different services: coronary CTA and quantitative analysis of plaque using CTA data. Report both only when both services were performed and are supported by the record.
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.
8,49275574,,Ct angio hrt w/3d image,A,,2.34,7.25,,7.25,NA,0.16,9.75,9.75,1,XXX,0.00,0.00,0.00,4,0,0,0,0,9,,33.4009,09,0,88,11.45,11.45,0.19
8,49375574,26,Ct angio hrt w/3d image,A,,2.34,0.85,,0.85,,0.12,3.31,3.31,1,XXX,0.00,0.00,0.00,4,0,0,0,0,9,,33.4009,09,0,88,0.00,0.00,0.00
8,49475574,TC,Ct angio hrt w/3d image,A,,0.00,6.40,,6.40,NA,0.04,6.44,6.44,1,XXX,0.00,0.00,0.00,4,0,0,0,0,9,,33.4009,02,0,88,10.60,10.60,0.07
8,49575577,,Quan&char c athrosclrtc plaq,A,,0.85,29.40,,29.40,NA,0.05,30.30,30.30,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
8,49675577,26,Quan&char c athrosclrtc plaq,A,,0.85,0.35,,0.35,,0.04,1.24,1.24,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
8,49775577,TC,Quan&char c athrosclrtc plaq,A,,0.00,29.05,,29.05,NA,0.01,29.06,29.06,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,01,0,99,0.00,0.00,0.00
8,49875580,,N-invas est c ffr sw aly cta,A,,0.73,25.73,,25.73,NA,0.09,26.55,26.55,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
5006102,IL,15,SUBURBAN CHICAGO,1.007,1.027,1.772
5106102,IL,99,REST OF ILLINOIS,1.000,0.913,1.563
5208102,IN,00,INDIANA,1.000,0.927,0.486
5305102,IA,00,IOWA,1.000,0.915,0.397
5405202,KS,00,KANSAS,1.000,0.904,0.504
5515102,KY,00,KENTUCKY,1.000,0.889,0.915
5607202,LA,01,NEW ORLEANS,1.000,0.941,1.136