What code would I use for the following scenario: A patient had a history of bilateral lower extremity pain. Ultrasound of the right and left lower extremity was performed using a low-frequency linear array transducer. Color Doppler duplex evaluation of common femoral, superficial femoral, popliteal, posterior tibial, and peroneal veins performed. The CFV through the popliteal veins were evaluated with both compression and response to augmentation and Valsalva. There is no evidence of DVT.


In this scenario, it is best to code 93970. As a reminder, all duplex scans require both color flow Doppler and spectral analysis. To assign duplex codes, both spectral analysis and color flow must be documented. Code 93970 describes a complete bilateral study. If the requirements for a complete bilateral study are not met, code 93971 is reported for a limited bilateral, or unilateral, study.

93970 Duplex scan of extremity veins including responses to compression and other maneuvers; complete bilateral study

This question was answered in our Ultrasound Coder. For more hot topics relating to radiology services, please visit our store or call us at 1.800.252.1578, ext. 2.


CPT® copyright 2021 American Medical Association (AMA). All rights reserved.

Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

CPT is a registered trademark of the American Medical Association.