CPT code 93463: Drug challenge, with hemodynamic measurements2026 Medicare rate & RVUs in Missouri
Reports administration of a pharmacologic agent during cardiac catheterization with serial hemodynamic assessment, such as pulmonary vasoreactivity testing.
Medicare pays $92.14–$94.62 for 93463 in the office in Missouri, from Rest of Missouri to Metropolitan St. Louis, MO. 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.
Your location
On this page 9 sections
What 93463 covers
During invasive cardiac catheterization, a clinician administers a pharmacologic agent and evaluates hemodynamic measurements before, during, and after the challenge. A familiar application is testing pulmonary vascular response during right-heart catheterization; agents such as adenosine or dobutamine may be used according to the clinical protocol. The service is typically performed in a cardiac catheterization laboratory by a cardiologist as part of an invasive hemodynamic study.
Report 93463 with the primary cardiac catheterization service, not as a stand-alone drug administration or monitoring service. The record should identify the agent and document the measurements and clinical response that support the pharmacologic assessment. CMS classifies 93463 as an add-on code: it is billed only with a primary procedure, and its payment falls within that procedure's global period. The primary catheterization and this additional challenge are reported as separate codes.
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 93463 pays more and less in Missouri
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
3 payment localities
$92.14 to $94.62
| Payment locality | Office | Facility |
|---|---|---|
| Metropolitan Kansas City, MO | $94.16 | $81.93 |
| Metropolitan St. Louis, MO | $94.62 | $82.22 |
| Rest of Missouri | $92.14 | $80.92 |
How the 93463 rate is calculated
Each of 93463’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 · 93463
RVUs × geographic indexes × conversion factor
Work1.95
1.95 RVUs× 1.000 GPCI
Practice expense0.78
0.78 RVUs× 1.000 GPCI
Malpractice0.14
0.14 RVUs× 1.000 GPCI
Adjusted RVUs
2.8700
Conversion factor
$33.4009
Medicare rate
$95.86
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 93463
The CMS indicators that decide how 93463 is paid alongside other services.
CMS payment indicators · 93463
Drug challenge, with hemodynamic measurements
| Rule | CMS value | What it means |
|---|---|---|
| Global period | ZZZ | Add-on code: falls within the primary procedure’s global period. |
| Multiple procedures | 0 | No multiple-procedure reduction. |
| 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 | 0 | Physician service: no professional/technical split. |
93463 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 93464Exercise hemodynamicsDuring cardiac catheterization
- 93464 describes hemodynamic assessment during physiologic exercise. Choose 93463 when the challenge is pharmacologic.
- 93451Right heart cathHemodynamic measurements
- 93451 reports right-heart catheterization itself. Add 93463 when a pharmacologic hemodynamic challenge is also performed and documented.
- 93453Heart catheterizationRight and left with ventriculography
- 93453 reports combined right- and left-heart catheterization. It is a primary catheterization service, whereas 93463 adds the pharmacologic assessment.
93463 billing questions
When should I report 93463 rather than 93464?
Use 93463 when a pharmacologic agent is used for hemodynamic assessment during catheterization. Use 93464 when the hemodynamic study uses physiologic exercise.
Can 93463 be billed without a catheterization code?
No. It is an add-on code and must be reported with a primary cardiac catheterization service.
What documentation supports 93463?
Document the pharmacologic agent, the invasive hemodynamic measurements before, during, and after administration, and the clinical purpose and response.
Does 93463 replace the primary catheterization code?
No. Report the primary catheterization separately; 93463 represents the added pharmacologic hemodynamic assessment.
Is 93463 the code for a pharmacologic stress test?
No. It describes a drug challenge with hemodynamic assessment during cardiac catheterization, not a stand-alone stress test.
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
Fee sheets · Coming soon
Put 93463 and the rest of your codes on one sheet
Your codes at your locality, with payer contracts beside Medicare.
Join the waitlist