SEER Inquiry System - Question 20061039 Details

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Produced: 10/27/2025 2:14 PM

Question 20061039

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Inquiry Details

References:

#1: CS Manual, 371. Pt II, Sep 2006

#2: 2004 SEER Manual, 168, C475

Question:

CS Tumor Size/CS Site Specific Factor--Breast: Should the tumor size be coded to 1.5 cm or 2.5 cm and SSF6 coded to 020 or 030 respectively for a tumor with invasive and in situ components described as being a 2.5 cm tumor with a "greater than" 1.5 cm invasive portion? See Discussion.

Discussion:

Should tumor size be coded to 1.5 cm and SSF6 coded to 020 [Invasive and in situ components present, size of invasive component stated and coded in CS Tumor Size] or should the tumor size be 2.5 cm with SSF6 coded to 030 [Invasive and in situ components present, size of entire tumor coded in CS Tumor Size because size of invasive component not stated and in situ described as minimal (less than 25%)]?

Answer:

This answer was provided in the context of CSv1 coding guidelines. The response may not be used after your registry database has been converted to CSv2.

Code CS tumor size 992 [stated as greater than 1 cm] and SSF6 code 020.

The September 2006 revision to the CS Tumor Size table now lists the 992-995 range codes as "greater than ___ cm."

It is better to code the invasive size than the entire size of the tumor. In the TNM mapping, this would more accurately portray the tumor as T1c rather than T2.

Cancer Site Category:

Breast

Data Item Category:

N/A

Other Category:

N/A

Year:

2006