CPT code 93594: Right-heart catheterization, abnormal native connections2026 Medicare rate & RVUs in California

CMS doesn’t publish an office rate for 93594 in California.

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

What 93594 covers

93594 reports diagnostic right-heart catheterization in congenital heart disease when native cardiac connections are abnormal. A cardiologist typically performs the study in a cardiac catheterization laboratory, advancing a catheter through the venous circulation to evaluate right-sided and pulmonary artery pressures and other hemodynamics. Its abnormal-connection designation distinguishes it from the normal-connection right-heart catheterization code.

Medicare lists 93594 with physician fee schedule status C: no national payment is published, and the Medicare Administrative Contractor determines payment for each claim. It has a 0-day global period, including same-day preoperative and postoperative care. Modifier 26 identifies professional interpretation, and modifier TC identifies technical services; without either modifier, the claim represents the global service. Standard multiple-procedure reduction applies when qualifying procedures are performed in the same session.

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 93594 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 93594 rate is calculated

Each of 93594’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 93594

The CMS indicators that decide how 93594 is paid alongside other services.

What modifiers do to the payment

When to use modifier 26

93594 compared with similar codes

How to choose

93593Right heart cathNormal connections

Both describe right-heart catheterization for congenital heart disease. Choose 93594 for abnormal native connections and 93593 for normal native connections.

93595Left heart cathCongenital heart disease

93595 describes left-heart catheterization for congenital heart disease; 93594 describes a right-heart study.

93596Right and left cathNormal native connections

93596 describes combined right- and left-heart catheterization when native connections are normal. 93594 describes right-heart catheterization with abnormal native connections.

93597Combined heart cathAbnormal native connections

93597 describes combined right- and left-heart catheterization with abnormal native connections; 93594 is for the right-heart catheterization service.

Codes related to 93594

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