Reference: AAOS Bulletin, October 2003: http://www2.aaos.org/aaos/archives/b...oct03/code.htm
A patient had a unicompartmental knee arthroplasty using code 27446. One year later, the patient had a revision of the hemiarthroplasty to a full arthroplasty. What codes would best represent this removal of the old compartment and then placement of a new total knee arthroplasty component?
Normally, this would be coded 27487. The revision code includes the removal of the old prosthesis. However, depending upon documentation and the situation, this could also be coded 27447 and 27488 -51.
Note: This is not a revision of a total knee replacement. Except for removal of a partial tibial tray and femoral metal runner, the procedure is the same work as a primary total knee."
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