Identifies the surgical procedure(s) performed in an effort to diagnose and/or stage disease.

00	No surgical diagnostic or staging procedure was performed.
01	A biopsy (incisional, needle, or aspiration) was done to a site other than the primary site. No exploratory procedure was done.
02	A biopsy (incisional, needle, or aspiration) was done of the primary site.
03	A surgical exploratory only. The patient was not biopsied or treated.
04	A surgical procedure with a bypass was performed, but no biopsy was done.
05	An exploratory procedure was performed, and a biopsy of either the primary site or another site was done.
06	A bypass procedure was performed, and a biopsy of either the primary site or another site was done.
07	A procedure was done, but the type of procedure is unknown.
09	No information about whether a diagnostic or staging procedure was performed.

Note: CoC recommends this item for tumors diagnosed 1996 and forward. For tumors diagnosed before 1996, this item may have been converted, and tumors with surgery would have been converted to 09 in this field. See also RX Summ--Surg Prim Site [1290] and RX Summ--Reconstruct 1st [1330]. For SEER and pre-1996 CoC, see RX Summ--Surgery Type [1640]. For tumors diagnosed between 1996 and 2002 this field may have described palliative care. For tumors diagnosed on or after January 1, 2003, palliative care is coded in a new field RX Summ--Palliative Proc [3270].