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Assign code 3 [converted with review].

In your scenario above, ICD-O-2 and ICD-O-3 are being independently coded which should yield the same result as converting the case and then reviewing it.

Otherwise, if there is an ICD-O-3 code which differs from the ICD-O-3 code based on the conversion criteria, it will trigger an edit.

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.Do not use the EOD information to determine apparent and inapparent when coding Collaborative Stage for tumors diagnosed 1/1/2004 or later.

The August 2007 CoC Flash stated that "After consultation with the AJCC curators for genitourinary disease, the CS Steering Committee has determined that the SEER list of terms for apparent and inapparent in the SEER Extent of Disease Manual is NOT to be used for interpreting reports for Collaborative Staging. While it was a convenient tool for registrars, the curators are of the opinion that the use of the list will lead to misinterpretation of reports. Rather, the curators recommend that registrars rely on a direct physician statement of apparent or inapparent disease for Collaborative Staging."

August 2007 CoC Flash: http://www.facs.org/cancer/cocflash/august07.pdf, Coding Prostate Cancer: A Message from the Collaborative Staging Steering Committee.

Abstract cancer of the left breast and cancer of the right breast as separate primaries. Code the surgery for each primary independent of the other primary.

For the first primary, assign code 41 [Total (simple) mastectomy, NOS WITHOUT removal of uninvolved contralateral breast].

For the second primary, assign the code for the procedure performed on that site.

For cases diagnosed 2018 and later

HGSIL of the vulva or vagina is reportable. HGSIL is a synonym for squamous intraepithelial neoplasia, grade III.

For cases diagnosed prior to 1/1/2010:T-cell large granular lymphocytic leukemia [9831] is a very indolent form of leukemia. It was assigned a behavior code of 1 by the editors of ICD-O-3 (as noted on pages 102, 147, 156 160-162, and 167 of the ICD-O-3 manual). The table on page 17 is the World Health Organization list of hematopoietic and lymphoid tumors. WHO recognizes TCLGLL as a malignancy. The disease is infrequently symptomatic enough to be diagnosed. However, when any of the terms listed with code 9831 are described as malignant or aggressive, report to SEER as a malignancy with a behavior code of /3.

For cases diagnosed 2010 forward, refer to the Hematopoietic and Lymphoid Neoplasm Case Reportability and Coding Manual and the Hematopoietic Database (Hematopoietic DB) provided by SEER on its website to research your question. If those resources do not adequately address your issue, submit a new question to SINQ.

Assign the primary site to C421 since that is the only allowable primary site for plasma cell myeloma, even though the bone marrow was negative. According to the revised criteria from the WHO Blue Book for Hematopoietic and Lymphoid Neoplasms (2017), the presence of multiple plasmacytomas is plasma cell myeloma (9732/3).

Assign code 8825/3. Apply the ICD-O-3 Matrix Concept, Rule F, page 29 of the hardcover ICD-O-3. The WHO Classification of Soft tissue and Bone, page 85, lists low grade myofibroblastic sarcoma, also called myofibrosarcoma, 8825/3.

For cases diagnosed prior to 2003, there has been no change in SEER standards for converting a Gleason score to a grade. As described in the SEER Program Code Manual, Gleason score 7 is converted to moderately differentiated [grade 2]. ONLY if the pathology report lists moderately poorly differentiated IN ADDITION to the Gleason's score 7, would you code the case as 3.

For cases diagnosed in 2003 and later, please see question number 20031123.

Begining with cases diagnosed 2021, glomus jugulare tumor, NOS is reportable. It is listed in ICD-O-3.2 with a behavior code of /3.

Yes. DFSP with fibrosarcomatous overgrowth and DFSP with fibrosarcomatous component Grade 2 are synonymous with fibrosarcomatous DFSP (8832/3).  Our expert pathologist also advises that DFSP with focal myxoid features is the same as DFSP, myxoid (8832/3).