Coding for a fluoroscopic sniff test (diaphragm fluoroscopy)

Q.

For a fluoroscopic sniff test, we assign CPT^® code 76000. What would we report when a sniff test is done using ultrasound instead of fluoroscopy?

A.

I would assign CPT code 76604 for this procedure.

The code and full description are:

76604  Ultrasound, chest (includes mediastinum), real time with image documentation