CPT code 93451: Right heart cath, hemodynamic measurements2026 Medicare rate & RVUs in Texas
Reports catheter-based assessment of right-sided cardiac and pulmonary pressures, oxygen saturation, and cardiac output, commonly during evaluation of pulmonary hypertension.
Medicare pays $782.28–$893.85 for 93451 in the office in Texas, from Beaumont, TX to Austin, TX. Which amount applies depends on the service address.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
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On this page 9 sections
What 93451 covers
A cardiologist typically performs this catheter-based study in a hospital catheterization laboratory. The catheter is advanced through the venous circulation to assess right atrial, right ventricular, pulmonary artery, and wedge pressures. Oxygen saturation and cardiac output are measured when performed. A common use is evaluating suspected pulmonary hypertension; the findings can also help assess cardiac filling pressures and hemodynamics in other cardiac conditions.
Report this service when the work is limited to right heart catheterization, rather than a combined left-sided study or coronary angiography. The record should support the clinical indication, catheterization performed, pressure and other hemodynamic findings, and the interpretation. A global claim includes the professional and technical services; modifier 26 identifies interpretation, while TC identifies equipment and staff. Same-day preoperative and postoperative care is included in the 0-day global period. When multiple procedures occur in one session, the highest-valued procedure is paid in full and others are subject to the standard reduction. Assistant-at-surgery payment requires documented medical necessity; co-surgeons and team surgery are not permitted.
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.
Where 93451 pays more and less in Texas
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
8 payment localities
$782.28 to $893.85
8 of 8 payment localities
| Payment locality | Office | Facility |
|---|---|---|
| Austin, TX | $893.85 | Unavailable |
| Beaumont, TX | $782.28 | Unavailable |
| Brazoria, TX | $842.13 | Unavailable |
| Dallas, TX | $847.09 | Unavailable |
| Fort Worth, TX | $839.71 | Unavailable |
| Galveston, TX | $844.32 | Unavailable |
| Houston, TX | $852.01 | Unavailable |
| Rest of Texas | $811.43 | Unavailable |
How the 93451 rate is calculated
Each of 93451’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 · 93451
RVUs × geographic indexes × conversion factor
Work2.41
2.41 RVUs× 1.000 GPCI
Practice expense22.66
22.66 RVUs× 1.000 GPCI
Malpractice0.42
0.42 RVUs× 1.000 GPCI
Adjusted RVUs
25.4900
Conversion factor
$33.4009
Medicare rate
$851.39
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 93451
The CMS indicators that decide how 93451 is paid alongside other services.
CMS payment indicators · 93451
Right heart cath, hemodynamic measurements
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 000 | Same-day global: pre- and post-op care on the day of the procedure is included. |
| Multiple procedures | 2 | Standard reduction: highest-valued procedure at 100%, others at 50%. |
| 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
93451 without 26 · national office
$851.39
Right heart cath, hemodynamic measurements
93451-26 · Professional component
$127.93
Pays only the interpretation and report.
93451 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 93452Left heart cathLeft-sided study
- 93452 describes a left-sided catheterization with ventriculography. Choose 93451 when the documented catheterization assesses the right heart without that left-sided study.
- 93453Heart catheterizationRight and left with ventriculography
- 93453 describes a combined right- and left-sided catheterization with ventriculography. Use 93451 when the procedure is limited to right-sided catheterization.
- 93456Cardiac catheterizationRight heart and coronary study
- 93456 includes right heart catheterization along with coronary angiography. Use 93451 for right-sided hemodynamic assessment without coronary imaging.
93451 billing questions
How does 93451 differ from a left or combined heart catheterization?
Use 93451 for right-sided pressure and hemodynamic assessment alone. A left-sided study or a combined right- and left-sided study has a different code.
Can 93451 be reported with coronary angiography?
When coronary angiography is part of the service, consider the code that describes the right heart study together with coronary imaging, such as 93456, rather than reporting 93451 as though it were the complete service.
When should modifier 26 or TC be used?
Use modifier 26 for the professional interpretation and TC for the technical service, including equipment and staff. Without either modifier, the claim represents the global service.
Are pressure measurements or oxygen saturation separately reported?
These are elements of the right heart catheterization when performed. The record should show the measurements obtained and their findings; the code is not reported separately for each chamber or measurement.
How does the multiple-procedure payment rule affect 93451?
When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and the other procedures are subject to the standard 50% reduction.
Can an assistant or co-surgeon be billed for this procedure?
Assistant-at-surgery payment requires documentation of medical necessity. Co-surgeons and team surgery are not permitted.
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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