Halo Adjustment?

Question:

What CPT code should be used to adjust a Halo device without anesthesia on postoperative Days 1, 2, and 5? CPT code 20664 was used to bill for the initial application of the Halo device. These adjustments are being performed in preparation for an upcoming surgery.

Answer:

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CPT codes 20664 and 20661 both include the application and removal of the Halo device. Any adjustments made during the 90-day global period following the initial procedure are considered part of the global surgical package and are not separately reportable.

*This response is based on the best information available as of 10/09/25.