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SEER Inquiry System - Report
Produced: 05/11/2026 3:45 AM
Question 20230061
Inquiry Details
References:
2018 EOD Manual. SEER*RSA, EOD Prostate Pathologic Extension
Question:
EOD 2018/EOD Primary Tumor--Prostate: How is Extent of Disease (EOD) Prostate Pathologic Extension coded when no residual cancer is found? See Discussion.
Discussion:
Patient was diagnosed with a pT1c prostate cancer in 2022. Patient was then treated with radical prostatectomy. No residual disease was found. Would the correct EOD prostate path extension code be 999 based on Note 8 (code 999 when radical prostatectomy is performed, but there is no information on the extension); or, would we use code 300 (confined to prostate) because the data item "...is used to assign pT category for prostate cancer based on radical prostatectomy specimens" and we know it was limited to the prostate because no residual was found?
Answer:
Assign code 300 for EOD Prostate Pathologic Extension.
In this scenario, the patient has a localized cancer confirmed by radical prostatectomy; the needle core biopsies likely removed all the cancer. Unlike prostate, other sites’ extension information is collected in EOD Primary Tumor, as seen commonly with breast tumors where the results from the surgical resection are recorded with tumor confined to primary site.
