CPT 93303Cardiology

Echo transthoracic

CPT code 93303 covers a transthoracic echocardiogram (TTE), an ultrasound of the heart performed through the chest wall. This non-invasive test uses sound waves to create images of the heart's structure, chambers, valves, and blood flow.

Showing rates for

National Average

Base Medicare rate

$208.63

This calculator gives a typical-case estimate using standard Medicare modifier rules. Actual payment depends on payer policies, documentation, code-specific CMS status indicators, and locality. Verify before billing.

RVU breakdown

Work RVU

1.3

PE RVU (NF)

5.08

MP RVU

0.07

Total RVU

6.45

Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High

NCCI bundling edits

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Billing tips

Verify complete study requirements are met: 2D imaging of multiple cardiac views, M-mode when indicated, spectral Doppler, and color flow Doppler must all be documented to support 93303 versus limited study codes
Impact: Incomplete documentation may result in downcoding to 93306 (limited study without spectral/color Doppler) with approximately 30-40% payment reduction
Bill global code 93303 only when your practice owns equipment and employs technical staff; split billing with 26/TC modifiers when services are divided between entities
Impact: Incorrect global billing when you only provide interpretation can result in 70-80% overpayment recoupment plus penalties
Do not bill 93303 with stress echo codes (93350-93352) on same date - stress echo codes include resting images as baseline and are comprehensive codes
Impact: Unbundling will result in denial of 93303 claim for approximately $208.63 and potential audit trigger
Ensure documentation includes quantitative measurements (LVEF, chamber dimensions, valve gradients), qualitative assessments (wall motion, valve morphology), and clinical correlation
Impact: Lack of comprehensive reporting elements increases audit risk and can support denial of entire $208.63 payment
Use appropriate ICD-10 codes linking symptoms to medical necessity - vague diagnoses like 'chest pain unspecified' may trigger prior authorization denials
Impact: Specific diagnostic codes (e.g., I50.9 heart failure, I48.91 AFib) support medical necessity and reduce denial rates by 15-25%
Verify frequency limitations with payers - Medicare typically covers routine surveillance echos every 12 months unless clinical change justifies earlier repeat

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 93303 in 2025?

The 2025 Medicare national average reimbursement for CPT 93303 is $208.63 for both facility and non-facility settings. This represents 6.45 total RVUs (1.3 work RVU, 5.08 PE RVU, 0.07 MP RVU) multiplied by the 2025 conversion factor of 32.3465. Actual payment may vary based on geographic locality adjustments.

What is the difference between CPT 93303 and 93306?

CPT 93303 is a complete transthoracic echo including 2D, M-mode, spectral Doppler, and color flow Doppler. CPT 93306 is a complete echo without spectral or color Doppler (2D with or without M-mode only). Using 93303 requires documentation of all Doppler components; incomplete studies should be coded as 93306 or limited echo codes 93307/93308.

Can CPT 93303 be billed with modifier 26 for professional component only?

Yes, modifier 26 should be appended to 93303 when the physician provides only the interpretation and report but does not own the equipment or employ the technical staff. In this scenario, the facility bills 93303-TC for the technical component. Never bill global 93303 when your practice only provides one component of the service.

How often does Medicare cover CPT 93303 echocardiograms?

Medicare does not have a fixed frequency limitation for 93303, but typically covers routine surveillance echocardiograms annually for stable chronic conditions. More frequent studies require documentation of clinical change, new symptoms, medication adjustments, post-procedure follow-up, or acute events. Medical necessity must be clearly documented for repeat studies within 12 months.

What diagnosis codes support medical necessity for CPT 93303?

Common supporting diagnoses include heart failure (I50.x), atrial fibrillation (I48.x), valvular disorders (I34.x-I37.x), cardiomyopathy (I42.x), chest pain (R07.x), dyspnea (R06.0), murmurs (R01.x), hypertension with cardiac involvement (I11.x), and post-MI status (I25.2). Vague or unspecified codes may trigger medical necessity denials.

Can CPT 93303 be billed on the same day as a stress echocardiogram?

No, CPT 93303 should not be billed separately when a stress echo (93350-93352) is performed the same day. Stress echo codes are comprehensive and include baseline resting images as part of the procedure. Billing both constitutes unbundling and will result in denial of the 93303 claim.

What are the work RVUs for CPT 93303 in 2025?

CPT 93303 has 1.3 work RVUs, 5.08 practice expense RVUs (both facility and non-facility), and 0.07 malpractice RVUs for a total of 6.45 RVUs in 2025. The work RVU represents physician time and intensity, while PE RVUs reflect equipment, supplies, and staff costs associated with performing the echocardiogram.