In cardiovascular diagnostics, CPT code 93306 has significant significance. It is used to report an entire Transthoracic echocardiogram (TTE) that includes both spectral and shed that comes with the Flyt Doppler-imaging. For health services, coders and billing experts, how they can implement knowledge and while using this code effectively, important for proper declaration and refund.
This article offers a comprehensive observation of CPT code 93306, including its definition, clinical signal, documentation guidelines, change of use, reimbursement details and general billing disadvantages.

What Is CPT Code 93306?
CPT code 93306 is defined as:
Echocardiography, Transthoracic, real-time with image documentation (2D), M-mode recording, when performed, with full, spectral Doppler echocardiography and with color streaming Doppler echocardiography.
This code describes a complete Transtthoresian echocardiogram using a swings placed on the patient’s breast to catch ultrasound images of the heart. The test is non-invasive and provides detailed information about it:
- Heart chamber sizes and wall thickness
- Heart valve structure and function
- Direction and velocity of blood flow
- Pericardial bag (fluid around the heart)
- General Heart Function (e.g., Extension Fraction)
It contains 2D imaging, M mode (when performed), spectral Doppler and color streaming Doppler—help to diagnose a wide range of heart conditions. CPT CPT code 93306 is important to detect many cardiovascular deviations.
When Should CPT Code 93306 Be Used?
CPT code 93306 should only be used when the complete echocardiographic study is performed, including all of the following:
- 2D real-time imaging
- M-mode, if applicable
- Spectral Doppler
- Color flow Doppler
This code is commonly used in the following clinical scenarios:
- Evaluation of chest pain or shortness of breath
- Heart-gelp
- Diagnosis or monitoring of valvular heart disease
- Rating of cardiomyopathy or heart failure
- Pre-Terrible Heart Risk Assessment
- Monitoring innate heart disease
- Following already identified heart deviation
It is important to ensure that all components are performed and documented. If Doppler disposal is not used, or if only a limited view is obtained, an alternative code should be selected. CPT code 93306 is only appropriate for complete studies that meet all imaging criteria.
Similar CPT Codes and When to Use Them
| CPT Code | Description | When to Use |
|---|---|---|
| 93306 | Complete TTE with Doppler (spectral and color) | Full exam with 2D, M-mode, spectral Doppler, and color Doppler |
| 93307 | Complete TTE without Doppler | Full exam without Doppler components |
| 93308 | Limited or follow-up TTE | Limited or follow-up views; Not complete studies |
| 93320 | Spectral Doppler (AD-ON) | Used with 93303 or 93307, if Doppler is not blanket |
| 93325 | Color Flow Doppler (addition) | Used with 93303 or 93307, if color is not included |
Note: While invoicing on CPT code 93306, you should not pay a separate bill for 93320 or 93325 when gathered in the 93306 code.
Modifier Usage with CPT Code 93306
When presenting claims, the proper use of the modifier is necessary for proper treatment and refund. Generally used modifiers include:
- Modifier -26: Used when only the professional component (interpretation and report) is billed.
- Modifier -TC: Used for the technical component (equipment, supplies, technician).
- Modifier -52: Indicates a reduced service, such as an incomplete exam.
- Modifier -76: Repeat procedure by the same provider on the same day.
- Modifier -77: Repeat procedure by a different provider on the same day.
- Modifier -59: Separate procedural service (rarely used with CPT code 93306 unless the requirement requires separation).
Hospital and outpatient clinics often invoice the technical component, while interpreting cardiologists or radiologists pay separate bills for the professional component. CPT code 93306 claims must be precisely split when appropriate.
Requirement
In order to justify the use of CPT code 93306 and to achieve the correct reimbursement, complete and clear documents are required. The documentation must include:
- Clinical signs: Causes of studies (e.g., symptoms, known condition)
- Process description: Description of imaging ideas
- Dimensions: Chamber size, drainage fraction, valve gradients, flow speed
- Conclusions: Structural deviations, valve function, pericardial findings
- Explanation: History summary and diagnosis based on examination
- Characters: Name and credentials of the doctor interpreting
Failure to include required documents can lead to rejection of claims, audits, or delayed payment. Accurate documentation supports the medical necessity of CPT code 93306 and ensures compliance.
Refund and Cost Idea
CPT code may be based on the equivalent of 93306:
- Place of service (hospital vs. office)
- Payer policies (Medicare vs. commercial insurance)
- Contracted rates with insurers
Specific reimbursement rates:
- Medicare (Non-Facility): Around $200 to $250
- Facility setting (hospital outpatient): Reimbursement is divided between technical and professional components
- Private insurers: Variable, depending on negotiated contracts
It is important to verify the patient’s insurance plan and any prior authorization requirements before performing the test. Many payers have specific rules regarding use of CPT code 93306.
General Billing Errors and How to Avoid Them
Unbundling Doppler Codes
Separate invoicing with CPT code 93306 using 93320 or 93325 is incorrect and may be denied. These components are already included.
Using CPT Code 93306 for Limited Exams
If a whole echocardiogram isn’t done, use 93308 as opposed to CPT code 93306.
Missing Modifiers
When splitting billing between facility and physician, not using -26 or -TC can cause claim rejections or duplication issues.
Repeat Procedures Without Documentation
If a repeated study is performed on the same day, it should be clearly documented and properly coded using -76 or -77 with CPT code 93306.
Key Takeaways
- CPT code 93306 is used to report a full transthoracic echocardiogram with Doppler.
- All imaging components—2D, M-mode, spectral Doppler, and color flow Doppler—must be included and documented.
- Do not separately bill for Doppler components when using CPT code 93306.
- Use appropriate modifiers to indicate professional or technical components or repeated procedures.
- Accurate documentation is necessary for compensation and compliance.
- Verify payer guidelines when submitting claims involving CPT code 93306.
- Ensure proper clinical justification and indication for every study using CPT code 93306.
Conclusion
For healthcare specialists and billing professionals, it is crucial to understand the correct use of CPT code 93306. Proper coding ensures accurate compensation, helps clinical necessities and helps hold compliance with billing rules.