CPT® Code 0347T

The CPT® Code 0347T refers to the placement of interstitial device(s) in bone specifically for the purpose of radiostereometric analysis (RSA). This procedure involves the insertion of tantalum beads into the bone during joint replacement surgery. The primary aim of this technique is to monitor the interaction between the body and the implant over time, providing valuable data on the stability and positioning of the implant. To facilitate the insertion of these beads, a series of 5 to 9 holes are created in the cortical or sclerotic bone surrounding the implant using an awl or drill bit. Following this, a steel cannula or trocar is utilized to introduce the tantalum beads into the prepared holes. Once inserted, these beads integrate into the bone structure, providing a stable reference point for subsequent analysis. The RSA technique employs two X-rays taken from different angles simultaneously, which allows for the creation of a three-dimensional image of the implant's position. This method is highly precise, capable of detecting movements as small as 0.2 millimeters, thereby offering critical insights into the performance and longevity of orthopedic implants.