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CPT Code 93306: Complete Transthoracic Echocardiogram with Doppler — Billing Guide

Correct Code: 93306 (Not 95901)

CPT 95901 is an unlisted neuromuscular procedure code — not for echocardiography. The standard code for a complete transthoracic echocardiogram with Doppler is CPT 93306.

CPT 93306 — Echocardiography, Transthoracic, Real-Time with Image Documentation (2D), Includes M-Mode Recording, When Performed, Complete, with Spectral Doppler Echocardiography, and with Color Flow Doppler Echocardiography

  • Complete = Comprehensive evaluation of:
    • Chamber sizes, wall thickness, function (LV/RV systolic & diastolic).
    • Valve structure, motion, stenosis/regurgitation severity.
    • Great vessels (aorta, PA, IVC).
    • Pericardium.
    • Doppler: spectral (PW, CW) + color flow.
  • Indications: New murmur, HF evaluation, pre-op, post-MI, congenital, chemotherapy monitoring, etc.
  • Professional Component: 93306-26 (physician interpretation & report).
  • Technical Component: 93306-TC (sonographer, equipment, supplies).
  • Global: 93306 (same entity).

Related Echo Codes

Code Description
93307 TTE, complete, without Doppler
93308 TTE, follow-up / limited study
93312 Transesophageal (TEE), probe placement + interpretation
93315 TEE, congenital cardiac anomalies
93320 Doppler echocardiography, pulsed wave / continuous wave (add-on)
93325 Doppler color flow mapping (add-on)

Documentation Requirements

  • Indication, clinical question.
  • 2D findings: chamber dimensions, wall motion, valve morphology.
  • Doppler data: velocities, gradients, regurgitant jets, diastolic parameters (E/A, e', E/e').
  • Color flow: semi-quantitative regurgitation assessment.
  • Conclusion / impression with clinical correlation.
  • Images archived (DICOM).

Common Billing Errors

  • Reporting 93306 for limited/follow-up study → use 93308.
  • Separately billing 93320/93325 with 93306 — bundled.
  • Missing image documentation → use 93307 (if no Doppler) or 93308 (limited).
  • Not appending -26/-TC when split billing.

Always verify with current CPT manual and payer LCDs/NCDs.

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