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Report Produced: 01/13/2026 06:39 AM

Report Question ID Question Discussion Answer Year
20061048 CS Extension--Pancreas, Head: When a tumor is described as having "vascular encasement of the celiac artery", is extension coded to 68 [tumor is inseparable from the celiac axis]?

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 vascular encasement of the celiac artery to CS extension code 68 [tumor is inseparable from the celiac axis].

This celiac axis is a small (1cm) area of branching arteries. The celiac artery branches into hepatic, gastric, and splenic at the axis. Dissecting tumor out from around the celiac axis is very tricky and usually encasement by tumor is a sign of inoperability.

 2006
20051002 CS Tumor Size/CS Site Specific Factor 6--Breast: How are these fields coded for a tumor stated to have only in situ disease in the breast with bone metastasis identified on scan? See Discussion. 4/20/04 Quadrantectomy: "Tumor involves a significant portion of the biopsy and is estimated at 10 cm in greatest dimension." The only other mention of size is from imaging studies which is 3.5 cm. The histology is "high grade ductal carcinoma with comedo necrosis. No invasive carcinoma identified." Bone scan on 4/20/04 shows "widespread metastatic disease to bone." By rule the behavior code for this case is changed to malignant.

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 tumor size as 100 [10 cm]. Size from pathology or operative report is preferred over size from imaging.

Code SSF6 as 050 [Invasive and in situ components present, size of entire tumor coded in CS Tumor Size because size of invasive component not stated and proportions of in situ and invasive not known.]

There is invasive tumor present (as proven by the bone metastasis), but the size and proportion of the invasive component is unknown.

Please note: Extension must be coded at least to 10 [Confined to the breast tissue and fat including nipple and areola; Localized, NOS] in this case. Do not assign extension code 00 [in situ].

 2005
20051118 CS Tumor Size--Rectum: Should the tumor size be coded to 080 from the colonoscopy size or 075 from the CT scan size? See Discussion. 6/29/04 Colonoscopy with biopsy: near obstructing circumferential friable mass extending from 8 to 16cm above anal verge. 6/30/04 CT Scan Abdomen/Pelvis: 7.5X7.2cm large rectal mass. The patient had radiation with concurrent 5-FU. Surgery is done after treatment.

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 tumor size as 080 (8cm). Code the largest pretreatment size recorded when there is preoperative systemic treatment.

 2005
20041102 CS Tumor Size--Breast: How is this field coded when a core needle biopsy removes the majority of the tumor? See Discussion.

Rule 4.j on page 128 of the 2004 SEER Manual states "Do not code the tumor size from a needle biopsy unless no residual tumor is found on further resection".

Example: 3/04/04 core biopsy Rt breast grade 1 infiltrating ductal carcinoma tumor size 0.8cm. 3/10/04 Lumpectomy: 3mm focus of residual infiltrating ductal carcinoma. If we can not take the size of the core needle biopsy, do we use the residual size of 3mm or the clinical size which was 1cm on mammogram?

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 the tumor size from the mammogram. Do not code the tumor size from the needle biopsy because residual tumor was present in the lumpectomy specimen.

 2004
20071078 Scope of Regional Lymph Node Surgery/CS Reg LN Pos/Exam: How are these fields coded if the operative report does not mention a separate lymph node procedure at the time of the surgery to the primary site? See Discussion.

LUL lobectomy: 1.7 cm apical tumor, diagnosis: moderately well differentiated subpleural squamous cell carcinoma, with involvement of pleural surface. 3 peribronchial LN neg and 2 AP window LNs neg. Stage T2N0.

1. No lymph node dissection or sampling was stated to be done

2. The lobectomy specimen contained the LNs

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 the Scope of Regional LN Surgery, Regional Nodes Positive and Regional Nodes Examined fields using the available information on the case. The lymph nodes can be obtained or biopsied during any procedure within the first course of treatment. A separate lymph node surgery is not required to complete these data items.

 2007
20061131 CS Lymph Node Examined--Lung: How is this field coded when a mediastinoscopy and lobectomy are performed and the pathology report indicates multiple lymph node fragments were removed as biopsy specimens and the lobectomy specimen revealed 3 interlobar lymph nodes?

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 the CS Lymph Node Examined field to 98 [number unknown] because the biopsy information is not clear and as a result you do not know how many lymph nodes were examined.

 2006
20071001 CS Site Specific Factor/Melanoma: How is CS SSF1 (depth of invasion) coded for a melanoma that demonstrates dermal invasion to a depth of "less than .2 mm" be coded to 999 [unknown]? See Discussion.

The path report says "superficial spreading malignant melanoma; 2 areas of papillary dermal invasion to depth of less than .2mm."

The revised CS pages include codes for "less than" a certain tumor size, but these are not included in the depth of invasion SSF. Using 999 results in an unstageable melanoma, when we know it is "less than .2mm".

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 SSF1 (depth of invasion) to 019 [.19mm]. For any case with an SSF1 code in the range of 001-100 mm, the T category will be determined using CS extension and SSF2 [ulceration]. All cases with an SSF1 code in the range of 001-100 mm will map to a T1 (either T1NOS, T1a or T1b).

 2007
20051033 CS Site Specific Factor--Melanoma: What is the correct code for measured thickness in SSF 1 for a melanoma of the choroid without an enucleation? See Discussion. CS Site Specific Factor 1 for melanoma of the choroid codes "Measured Thickness (Depth), Breslow's Measurement." The note for this field states "Record actual measurement in millimeters from the pathology report." For melanoma of the eye, there is often only an eye exam report stating the thickness. Can PE thickness (clinical statement only) be coded for SSF 1 or is this field coded only from pathology? (i.e., all cases treated without enucleation would have this field coded to 999)

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 SSF 1 999 [Unknown] when there is no enucleation, and therefore, no pathology report for a choroid melanoma.

 2005
20061055 CS Lymph Nodes--Colon: What criteria is used to distinguish between code 30 [Regional lymph nodes, NOS] and 80 [Lymph nodes, NOS] when positive lymph nodes are removed during a colon resection but the lymph node location is not stated? See Discussion.

Example 1: Descending colon excision: Metastatic adenocarcinoma in 8 of 9 lymph nodes.

Example 2: Hepatic flexure and en bloc resection of liver. Adenocarcinoma in 3 of 10 lymph nodes.

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 positive nodes included with the resected specimen as regional lymph nodes, NOS when the location is not stated. See number 3.e under the general instructions for coding CS lymph nodes.

Based only on the information provided, code CS lymph nodes 30 [Regional lymph nodes, NOS] for both examples.

 2006
20051007 CS Tumor Size--Breast: How is this field coded for a 1.5 cm clinically palpable tumor that appeared to be a cyst with a papilloma when the partial mastectomy Path Micro stated the lesion was an "intraductal papilloma with focal noninvasive papillary carcinoma"? See Discussion. Should the size be coded to 999 [unknown] because the noninvasive papillary carcinoma is described only as "focal" and is not measured and it is not known how much of the tumor is benign and how much is in situ. Or would the size be coded to the size of the palpable mass, 1.5 cm?

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 as 999 [unknown]. Size of the focal noninvasive papillary carcinoma is not stated.

 2005