Question: How do we correctly bill for 97035 Ultrasound (two) units? I realize ultrasound is a timed therapy and two units represent twice the time. But can it also show one unit for the cervical spine and one unit for the lumbar spine, and how is it shown on the 1500 form?
Answer: 97035 can only represent the time for the procedure and not the number of areas. That is why the CPT code description says, "one or more areas." So, add your total time and divide by 15, and then round to the nearest 15 minute unit (if you follow the Medicare standard of rounding). Enter the number of time units in box 24g.
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