Question: California Subscriber Answer: Echocardiography includes getting ultrasonic signals from the heart and great vessels, done with real time image and/or Doppler ultrasonic signal documentation, with its results. Pulmonologists order 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) on a host of diagnoses, including but not limited to: Most echos are performed in diagnostic testing facilities or cardiology offices where a radiologist or cardiologist will interpret that findings and bill for the services. Tip: Check out the CMS website (www.cms.hhs.gov) for local coverage determinations (LCD) pertaining to your carrier.