A patient is admitted for a planned right total knee arthroplasty. Postoperatively, the patient develops a pulmonary embolism. How is the PE coded?
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A
As the principal diagnosis since it was the most serious complication
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B
As a secondary diagnosis since the TKA was the planned reason for admission
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C
Not coded since it is a complication of surgery
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D
As a postoperative complication code with the TKA as secondary