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When therapy type = S, the Surgery at Primary Site code indicates a definitive surgical treatment for this cancer. Enter the two digit code to indicate the specific surgical procedure performed at the primary cancer site. These codes are listed in Appendix G - Surgery Codes - ROADS. They are site specific codes, as taken from the ACoS Registry Operations and Data Standards Manual, revised for 1998. This data item applies only to cancers diagnosed before 2003. (Surgeries performed on patients diagnosed after 1/1/2003 are recorded in data item 50100.)

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