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For cases diagnosed 2010 and forward, access the Hematopoietic Database at http://seer.cancer.gov/seertools/hemelymph.

Code the primary site to C421 [bone marrow] per Rule PH5. Note 1 for Rule PH5 states CLL always has peripheral blood involvement. If the peripheral blood is positive for CLL/SLL and no bone marrow biopsy is done, code the primary site to C421 [bone marrow].

SEER*Educate provides training on how to use the Heme Manual and DB. If you are unsure how to arrive at the answer in this SINQ question, refer to SEER*Educate to practice coding hematopoietic and lymphoid neoplasms. Review the step-by-step instructions provided for each case scenario to learn how to use the application and manual to arrive at the answer provided. https://educate.fhcrc.org/LandingPage.aspx.

For cases diagnosed 2010 and forward, access the Hematopoietic Database at http://seer.cancer.gov/seertools/hemelymph.

This case should be accessioned as two primaries, myelodysplastic syndrome (MDS) [9989/3] diagnosed 10/2/10 and chronic myelomonocytic leukemia (CMML-2) [9945/3] diagnosed 6/19/12 per Rule M15. Per Rule M15, use the Multiple Primaries Calculator when rules M1-M14 do not apply.

When myelodysplastic syndrome (MDS) became reportable, the rules in effect at that time resulted in MDS often being the only diagnosis reported when both MDS and a leukemia were diagnosed. Statistics for some leukemias were impacted. Now we report both the MDS and the leukemia for greater accuracy.

SEER*Educate provides training on how to use the Heme Manual and DB. If you are unsure how to arrive at the answer in this SINQ question, refer to SEER*Educate to practice coding hematopoietic and lymphoid neoplasms. Review the step-by-step instructions provided for each case scenario to learn how to use the application and manual to arrive at the answer provided. https://educate.fhcrc.org/LandingPage.aspx.

Based on the information provided, this case of adult granulosa cell tumor is malignant and reportable. According to our expert pathologist consultant, "though granulosa cell tumor NOS/ adult NOS is 8620/1, the presence of peritoneal implants or metastases, and/or lymph node metastases indicates the tumor is malignant, and it should be coded /3."

Note that the presence of implants or metastases does not indicate malignancy in the case of low malignant potential ovarian epithelial tumors. Our path expert explains "in contrast, by convention the behavior of borderline/LMP ovarian epithelial tumors is determined by the ovarian primary, and is /1, even though there may be peritoneal implants/metastases, or metastatic disease in lymph nodes. The treatment may vary in these circumstances, but to my knowledge the decision as to the tumor designation remains based on the primary tumor."

Use Rule M2. Abstract as a single primary when there is a single histology.

When you have questions about how to code the primary site, start with the abstractor notes. If the answer isn't found there go to Module 7 (a specific module to help code primary site for lymphomas).

The abstractor notes for DLBCL in this case do not provide information you can use for this case. Go to Module 7 in the PH rules.

Use Rule PH25 Code the primary site to the organ when lymphoma is present in an organ and that organ’s regional lymph nodes. Code the primary site to colon (organ and regional lymph nodes involved). The fallopian tube is secondary involvement. As is common with lymphomas, there can be more than one organ involved. You can differentiate the primary site from the secondary site(s) because of the large colon mass with regional lymph node involvement.

Accession two primaries, adenocarcinoma [8140/3] of the prostate [C619], followed by small cell (neuroendocrine) carcinoma [8041/3] of the prostate [C619] for each of the examples given per Rule M10.

In each case, the second histology (because it is not adenocarcinoma) is a new prostate primary. Small cell carcinoma and small cell neuroendocrine carcinoma are not adenocarcinomas. As a result they are not covered by Rule M3.

For cases diagnosed 2010 and forward, access the Hematopoietic Database at http://seer.cancer.gov/seertools/hemelymph.

Code the primary site to C809 [unknown].

Langerhans Cell Histiocytosis (LCH) includes three major groups:

• Unifocal: Slowly progressing disease, involves one organ.

When the disease is both multifocal and multisystem, code the primary site to unknown [C809] because there is no way to identify the origin of the neoplasm in this situation.

SEER*Educate provides training on how to use the Heme Manual and DB. If you are unsure how to arrive at the answer in this SINQ question, refer to SEER*Educate to practice coding hematopoietic and lymphoid neoplasms. Review the step-by-step instructions provided for each case scenario to learn how to use the application and manual to arrive at the answer provided. https://educate.fhcrc.org/LandingPage.aspx.

The difference is that 8150 is for islet cell tumors. The preferred name was changed by WHO/IARC to reflect the current language used by pathologists to describe islet cell tumors [8150].

The 8240 histology code added the neuroendocrine tumor, grade 1, low or well differentiated terms to the carcinoid ICD-O name.

Islet cell tumors are more aggressive than the pancreatic NET tumors. Treatment and prognosis are determined by the histologic type. While the histology code 8150 is not new, the histology name has been updated.

For cases diagnosed 2010 and forward, access the Hematopoietic Database at http://seer.cancer.gov/seertools/hemelymph.

Per Rule M15, accession two primaries. According to Rule M15, use the multiple primaries calculator to determine the number of primaries for all cases that do not meet the criteria of M1-M14. Per the calculator, this scenario represents two primaries.

Assuming the only area of involvement is the large intestine, code the histology to 9680/3 [diffuse Large B-Cell Lymphoma] and per Rule PH24 code the primary site to C189 [colon, NOS]. According to PH24, one is to code the primary site to the organ when lymphoma is present only in an organ.

Rule PH26 applies to the second primary. Assuming the only area of involvement is the bone marrow, code the histology to 9702/3 [peripheral T-cell lymphoma] and code the primary site to C421 [bone marrow]. According to PH26, one is to code the primary site to bone marrow (C421) when lymphoma is present only in the bone marrow.

Rule M4 does not apply for this case. Rule M4 applied when you have two or more types of non-Hodgkin lymphoma in the same anatomic location. That is not the case in this scenario.

SEER*Educate provides training on how to use the Heme Manual and DB. If you are unsure how to arrive at the answer in this SINQ question, refer to SEER*Educate to practice coding hematopoietic and lymphoid neoplasms. Review the step-by-step instructions provided for each case scenario to learn how to use the application and manual to arrive at the answer provided. https://educate.fhcrc.org/LandingPage.aspx.

For cases diagnosed 2010 and forward, access the Hematopoietic Database at http://seer.cancer.gov/seertools/hemelymph.

This case is reportable if the patient was treated for plasmacytoma. When the physician calls the case plasmacytoma and treats the patient accordingly, report the case.

See Case Reportability Instructions #6: Report the case when there is a clinical diagnosis (physician's statement) of a reportable hematopoietic or lymphoid neoplasm.

Note 1: The clinical diagnosis may be a final diagnosis found within the medical record or recorded on a scan (CT, MRI for example)

Note 2: Report the case even if the diagnostic tests are equivocal. A number of hematopoietic neoplasms are "diagnoses of exclusion" in which the diagnostic tests are equivocal and the physician makes the clinical diagnosis based on the equivocal tests and the clinical picture. See the Heme DB for definitive diagnostic methods for the specific neoplasm being abstracted.

SEER*Educate provides training on how to use the Heme Manual and DB. If you are unsure how to arrive at the answer in this SINQ question, refer to SEER*Educate to practice coding hematopoietic and lymphoid neoplasms. Review the step-by-step instructions provided for each case scenario to learn how to use the application and manual to arrive at the answer provided. https://educate.fhcrc.org/LandingPage.aspx.