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Report Produced: 01/16/2026 15:05 PM

Report Question ID Question Discussion Answer Year
20041002 CS Size of Tumor/CS Extension--Brain and CNS: How should these fields be coded for benign CNS tumors?

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 Extension as 05 [Benign or borderline brain tumors]. Code the size of the tumor if specified. Otherwise code CS Tumor Size as 999 for benign CNS tumors.

 2004
20051089 2004 SEER Manual Errata/Grade--Breast: Are the codes on page 94 of the SEER manual's Breast Grading Conversion Table requiring conversion of nuclear grades 1/3 and 1/2 to code 1, 2/3 to code 2, and 2/2 and 3/3 to code 3 correct or are the codes on page C-473 in the Three-Grade System (Nuclear Grade) for breast correct that requires conversion of the same examples to codes 2, 3, and 4 respectively? On page C-473: Delete the section titled "Three-Grade System (Nuclear Grade)" and delete the table. Use the tables on pages 94 and C-472 to code grade for breast cancer. This correction will be made in the next errata. 2005
20150045

MP/H/Histology--Thyroid:  What is the histology code for primary site of thyroid cancer with the histology of papillary thyroid carcinoma, classical and oncocytic type?

Code the histology to 8342/3, thyroid oncocytic (oxyphillic) papillary carcinoma.

2015
20081037 Extension/CS Extension--Prostate: Do the prostate guidelines used for EOD still apply to cases diagnosed 2004 forward?

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.For cases diagnosed 2004 and forward, refer to the Collaborative Staging manual.

The 2004 CS guidelines have been agreed upon by all standard setters and have been reviewed by the COC/AJCC urologists.

Note: Do not use the SEER EOD guidelines with Collaborative Staging.

 2008
20000495 EOD Fields--All Sites: Is EOD information limited to what is available exactly two months from the day of diagnosis?

For cases diagnosed 1998-2003:

EOD should include all information available within four months of diagnosis in the absence of disease progression or through completion of surgery(ies) in first course of treatment, whichever is longer.

Mets known to have developed after EOD was established should be excluded.

 2000
20021137 Multiple Primaries (Pre-2007)--Soft Tissue: Does SEER agree that one primary of the soft tissues of pelvis [C49.5] should be reported when a pathologic diagnosis for bilateral herniorrhaphies is "right and left inguinal hernias with low grade spindle cell sarcoma"?

For tumors diagnosed prior to 2007:

Yes. This is one primary and should be coded to C49.5 [Connective, subcutaneous and other soft tissue of pelvis]. According to Rule A in ICD-O-3, the type of tumor ("sarcoma") indicates origin from a particular tissue, resulting in the primary site code of C49.5 [Inguinal region, NOS] for this sarcoma.

For tumors diagnosed 2007 or later, refer to the MP/H rules. If there are still questions about how this type of tumor should be coded, submit a new question to SINQ and include the difficulties you are encountering in applying the MP/H rules.

 2002
20230037

Reportability/Histology--Gallbladder: Is intracholecystic papillary-tubular neoplasm (ICPN) with extensive high grade dysplasia of the gallbladder reportable?

Report intracholecystic papillary neoplasm (ICPN) with high-grade dysplasia (8503/2) of the gallbladder.

 2023
20010134 Diagnostic Confirmation--Testis: How do you code this field when a testicular mass is confirmed to be cancer on physical exam and testicular antigen, but the orchiectomy specimen was negative and yet the final signout diagnosis on the medical record was "testicular cancer"? Code the Diagnostic Confirmation field to 5 [Positive laboratory test/marker study] because the disease was confirmed both clinically and by a positive marker. Code 8 [Clinical diagnosis only] is used when the diagnosis is based on information other than that coded in 5, 6, or 7 [positive lab test/marker study, visualization, and radiography or other imaging techniques]. Code 8 is rarely used. 2001
20021022 Histology (Pre-2007): What code is used to represent the histology "non oat cell carcinoma"?

For tumors diagnosed 2001-2006:

Code the Histology field to 8046/3 [non-small cell carcinoma] if the pathologist does not provide a more specific histologic type. "Non oat cell" is a synonym for "non-small cell."

For tumors diagnosed 2007 or later, refer to the MP/H rules. If there are still questions about how this type of tumor should be coded, submit a new question to SINQ and include the difficulties you are encountering in applying the MP/H rules.

 2002
20031191 EOD-Clinical Extension--Prostate: How is this field coded when biopsies of the prostatic apex are positive and the physician clinically stages the case as T1c?

For cases diagnosed 1998-2003:

Code clinical extension to 33 [arising in the prostatic apex] when a biopsy of the prostatic apex is positive for malignancy, with no further evidence of involvement. If biopsies of both the apex and another site within the prostate (for example right lobe) are positive and there is no mention that the malignancy arose in the apex, code extension to 34 [extending into the prostatic apex].

 2003