CPT code 93464: Exercise hemodynamics, during cardiac catheterization2026 Medicare rate & RVUs in California

Medicare pays $238.58–$300.10 for 93464 in the office in California, from Chico, CA to San Benito County, CA. 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.

What 93464 covers

This add-on captures hemodynamic measurements taken while a patient exercises during cardiac catheterization, commonly using bicycle or arm ergometry. Cardiologists and other physicians performing catheterization may use it when symptoms such as exertional dyspnea are not explained by resting measurements, or when they need to assess exercise-related changes in cardiac filling or pulmonary pressures. Cardiac output may be measured, with or without oxygen-consumption measurement, as part of the exercise assessment.

Report 93464 with the primary cardiac catheterization code for the procedure performed; it is not a stand-alone service. The record should identify the exercise method and document the relevant baseline and exercise measurements and physician interpretation. CMS treats it as an add-on paid within the primary procedure’s global period. The diagnostic test has professional and technical components: modifier 26 identifies the interpretation, modifier TC identifies equipment and staff, and no modifier represents the global service.

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 93464 pays more and less in California

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

29 of 29 payment localities

How the 93464 rate is calculated

Each of 93464’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.

Payment rules and modifiers for 93464

The CMS indicators that decide how 93464 is paid alongside other services.

What modifiers do to the payment

When to use modifier 26

93464 compared with similar codes

How to choose

93463Drug challengeWith hemodynamic measurements

Choose 93464 for hemodynamic assessment during exercise; choose 93463 when a pharmacologic agent is administered for the assessment.

93451Right heart cathHemodynamic measurements

93451 reports right heart catheterization. Add 93464 when exercise hemodynamic measurements are also performed during the catheterization.

93453Heart catheterizationRight and left with ventriculography

93453 reports combined right and left heart catheterization. It does not by itself identify the additional exercise hemodynamic study reported with 93464.

Codes related to 93464

Related codes aren’t interchangeable: bill the code that matches the service performed.

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

Open CMS sourceHow we calculate rates