Summary & Overview
CPT 93304: Limited Transthoracic Echocardiography for Congenital Heart Disease
CPT code 93304 represents a limited or follow-up transthoracic echocardiography study used to obtain focused cardiac images through the chest wall for patients born with heart defects. It is a targeted ultrasound exam that addresses discrete clinical concerns and does not attempt to document all structures included in a complete echocardiogram. The service carries both professional and technical components and is commonly performed in echocardiography labs, outpatient hospital settings, and specialty clinics.
Key national payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise briefing on the clinical context for use of 93304, how this limited echo differs from a full transthoracic study, and where it is typically delivered. The publication also summarizes common modifiers associated with split professional/technical billing, outlines typical sites of service, and identifies gaps where input data was not provided.
This summary is intended to inform stakeholders about the code’s purpose, common billing configurations, and the practical clinical scenarios driving utilization. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 93304 describes a limited or follow-up transthoracic echocardiography performed to obtain images of the heart through the chest wall in patients born with heart defects. This is a focused, limited cardiac ultrasound exam intended to address a specific clinical concern or follow-up question rather than to document all structures included in a complete echocardiographic study.
-
Service type: Limited transthoracic echocardiography (focused cardiac ultrasound)
-
Typical site of service: Echocardiography lab, hospital outpatient department, or clinic setting where cardiac ultrasound imaging is performed on patients with congenital heart disease
Clinical & Coding Specifications
Clinical Context
A pediatric or adult patient with a known congenital heart defect presents for a focused follow‑up echocardiographic evaluation. Typical scenarios include postoperative surveillance after repair of ventricular septal defect or tetralogy of Fallot, interval assessment of a previously identified valvular lesion, or evaluation of a targeted clinical change (new murmur, increased dyspnea, or arrhythmia) in a patient born with congenital heart disease. The ordering clinician (pediatric cardiologist, adult congenital cardiology, or cardiology primary team) requests a limited transthoracic echocardiogram to obtain specific views and measurements rather than a full anatomic survey.
Workflow: The patient checks in at the cardiology imaging suite or hospital outpatient echo lab. A sonographer performs a focused transthoracic study, obtaining targeted two‑dimensional images, Doppler, and color flow across the structure of interest (for example, residual VSD jet, right ventricular outflow tract, or a repaired valve). The sonographer documents the focused images and measurements and provides immediate review to the interpreting cardiologist. The interpreting physician reviews images, provides a focused report addressing the clinical question, and documents recommendations or need for a complete study if additional information is required. Billing is submitted for a limited transthoracic echocardiogram with both professional and technical components considered as appropriate for the facility and provider roles.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 |