CPT code 93452: Left heart cath, left-sided study2026 Medicare rate & RVUs in Maryland
Left heart catheterization evaluates left ventricular pressures and function, reported when the left-sided catheter study is performed without coronary angiography.
Medicare pays $883.50–$1,011.92 for 93452 in the office in Maryland, from Rest of Maryland to Washington, DC area. 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 93452 covers
A cardiologist typically advances a catheter through arterial access into the left side of the heart to assess pressures and cardiac function. The study may include contrast injection to image the left ventricle; this is used in evaluations such as suspected valve disease or impaired ventricular function. It is commonly performed in a cardiac catheterization laboratory. Coronary angiography is not part of this service; when it is also performed, a different code describes the combined work.
Report the code for the left-sided catheter study, whether or not ventriculography is performed. The record should support the catheterization and document the findings and any imaging performed. CMS recognizes professional and technical components: modifier 26 identifies the interpretation, modifier TC identifies equipment and staff, and no modifier represents the global service. The code has a 0-day global period, so same-day preoperative and postoperative care is included. When multiple procedures are performed in one session, the highest-valued procedure is paid in full and the others at 50%. Modifier 50 is inappropriate. Assistant-at-surgery payment requires medical-necessity documentation; co-surgeon and team-surgery billing 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 93452 pays more and less in Maryland
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
3 payment localities
$883.50 to $1011.92
| Payment locality | Office | Facility |
|---|---|---|
| Baltimore area, MD | $936.63 | Unavailable |
| Rest of Maryland | $883.50 | Unavailable |
| Washington, DC area | $1,011.92 | Unavailable |
How the 93452 rate is calculated
Each of 93452’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 · 93452
RVUs × geographic indexes × conversion factor
Work4.39
4.39 RVUs× 1.000 GPCI
Practice expense20.94
20.94 RVUs× 1.000 GPCI
Malpractice0.90
0.90 RVUs× 1.000 GPCI
Adjusted RVUs
26.2300
Conversion factor
$33.4009
Medicare rate
$876.11
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 93452
The CMS indicators that decide how 93452 is paid alongside other services.
CMS payment indicators · 93452
Left heart cath, left-sided study
| 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
93452 without 26 · national office
$876.11
Left heart cath, left-sided study
93452-26 · Professional component
$231.13
Pays only the interpretation and report.
93452 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 93453Heart catheterizationRight and left with ventriculography
- 93453 includes both right- and left-heart catheterization. Use 93452 when the reported study is limited to the left heart.
- 93458Coronary catheterizationLeft heart, native coronaries
- 93458 includes coronary angiography with the left-heart catheterization. Choose 93452 when coronary angiography was not performed.
- 93454Coronary angiographyWithout graft or left-heart catheterization
- 93454 describes coronary angiography without left-heart catheterization. It does not replace 93452 when a left-sided catheter study is performed.
- 93451Right heart cathHemodynamic measurements
- 93451 is for right-heart catheterization alone; 93452 is for the left-heart study.
93452 billing questions
When should 93452 be used instead of 93458?
Use 93452 for the left heart catheterization without coronary angiography. When coronary angiography is also performed, 93458 describes the combined service.
Does 93452 require ventriculography?
No. Ventricular imaging may be performed as part of the study, but the code can be reported when ventriculography is not performed.
How are the professional and technical components billed?
Use modifier 26 for the professional interpretation and modifier TC for the technical component. Billing without either modifier represents the global service.
Can modifier 50 be reported?
No. CMS identifies bilateral adjustment as inappropriate for this code and anatomy.
How does the multiple-procedure rule affect payment?
For procedures performed in the same session, the highest-valued procedure is paid in full and the other procedures are paid at 50%. Same-day preoperative and postoperative care is included in this code's 0-day global period.
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
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