Billing code 93303: Congenital echoMedicare rate & RVUs

Medicare pays $220.45 for 93303 nationally in the office. Local office rates run $194.54–$301.68.

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

What 93303 covers

This study uses an ultrasound probe on the chest to assess heart structure and function when congenital cardiac anatomy is present or suspected. A cardiologist or other qualified clinician interprets the images; the technical service is generally performed by trained cardiac sonography staff in a hospital, clinic, or imaging practice. It may be used for initial assessment or ongoing evaluation of congenital heart disease in children or adults.

Select this code for a complete transthoracic study focused on congenital cardiac abnormalities, rather than a limited follow-up examination or a standard study for acquired heart disease. The report should support the congenital indication and document a complete examination and interpretation. Bill the global service without a component modifier, or use modifier 26 for interpretation or TC for equipment and staff when those components are billed separately. CMS applies the cardiovascular diagnostic multiple procedure reduction to the technical component.

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 93303 pays more and less

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

109 of 109 payment localities

93303 rates by state

Office rate range in each state. Select a state to see its payment localities.

How the 93303 rate is calculated

Each of 93303’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 93303

The CMS indicators that decide how 93303 is paid alongside other services.

What modifiers do to the payment

When to use modifier 26

93303 compared with similar codes

How to choose

93304Transthoracic echo

Choose 93303 for a complete congenital transthoracic examination. Choose 93304 when the congenital study is limited or performed as follow-up.

93306Echocardiogram (TTE)

93306 is the complete standard transthoracic study with Doppler. This code identifies a complete transthoracic evaluation focused on congenital cardiac abnormalities.

93307Transthoracic echo

93307 describes a complete standard transthoracic study without Doppler. This code is the congenital-specific complete study.

93312Transesophageal echo

93312 uses a transesophageal probe, rather than imaging through the chest wall. Select the approach that matches the examination actually performed.

Codes related to 93303

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