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20100087 | Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are accessioned for one patient with history of marginal zone lymphoma initially diagnosed in 1994, followed by a 2010 diagnosis of large B-cell lymphoma and another patient with both B-cell chronic lymphocytic leukemia/small cell lymphoma (CLL/SLL) and diffuse large B-cell (DLBCL) in 2009? See Discussion. | Case 1 - Patient has a history of marginal zone lymphoma diagnosed in 1994 with recurrences in 2007 and 2009. The patient now presents for a bone marrow biopsy in May 2010 and is found to have large B-cell lymphoma, transformation. The first primary, marginal zone lymphoma, falls under the 2009 rules and the second primary, large B-cell lymphoma, falls under the 2010 and forward rules?
Case 2 - Patient was diagnosed with B-cell CLL/SLL and a DLBCL in 2009. If the 2009 rules only apply, these are a single primary. If the patient is admitted and treated in 2010 are the rules still based on the diagnosis date? |
Updated May 2026
Case 1: Accession two primaries per Rule M10 when a neoplasm is originally diagnosed as a chronic neoplasm AND there is a second diagnosis of an acute neoplasm diagnosed after the initial clinical workup of the chronic neoplasm is completed. The histology for the first primary is 9699/3 [marginal zone lymphoma] represents a chronic neoplasm and the second primary is 9680/3 [diffuse large B-cell lymphoma] is an acute neoplasm which was diagnosed more than 21 days after the first primary.
Case 2: Do not use the Heme DB and Manual rules for this case. Both diagnoses were made prior to 2010. The Heme DB and Manual are only effective for cases diagnosed 1/1/2010 and forward. Use the ICD-O-3 Hematopoietic Primaries Table to determine the number of primaries for this case. Per the Table, a second diagnosis of DLBCL [9680/3] following a diagnosis of CLL/SLL [9823/3] is one primary |
2010 |
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20130020 | Reportability--Heme & Lymphoid Neoplasms: Is aplastic anemia reportable and is it an alternate name for refractory anemia? | Updated May 2026
Aplastic anemia is not reportable for any year, and it is not an alternative name for refractory anemia.
See the SEER Glossary https://seer.cancer.gov/seertools/glossary/ |
2013 | |
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20100073 | Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are accessioned when a patient is diagnosed on 4/7/10 by a bone marrow biopsy with myelodysplastic syndrome, refractory anemia (RAEB2) and on a 7/27/10 bone marrow biopsy with progression to acute myelogenous leukemia with 40% blasts (AML)? | Updated May 2026
Accession two primaries per Rule M10, the first is a chronic neoplasm RAEB2 [9983/3] and the second is an acute neoplasm AML, NOS [9861/3]. Rule M10 states abstract as multiple primaries when a neoplasm is originally diagnosed in a chronic phase (MDS RAEB2) and an acute disease (AML) is diagnosed after the initial clinical workup of the chronic neoplasm is completed. This is the rule that fits your case.
There are several important pieces of information. There were two bone marrows biopsies; one confirmed the chronic disease and a second confirmed the acute disease. The dates of the bone marrows are more than 3 months apart. Because you have a chronic and an acute disease, Rules M8-M13 in the coding manual apply. |
2010 | |
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20110066 | Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are to be accessioned for a patient with a history of CLL undergoing chemotherapy who is subsequently diagnosed on a liver biopsy with diffuse large B-cell lymphoma (Richter transformation)? | Updated May 2026
Abstract the diffuse large B-cell lymphoma (Richter transformation) as a second primary per Rule M10. Rule M10 states to abstract as multiple primaries when a neoplasm is originally diagnosed as a chronic neoplasm (CLL) AND there is a second diagnosis of an acute neoplasm (the diffuse large B-cell lymphoma (Richter transformation)) after the initial clinical workup for the chronic neoplasm is completed.
"Richter transformation," also known as "Richter syndrome," is a term that indicates CLL has transformed to DLBCL. Richter syndrome is listed under the Alternate Names section in the Heme DB for DLBCL (9680/3). |
2011 | |
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20100076 | Reportability--Heme & Lymphoid Neoplasms: If not specified as primary, idiopathic, or essential, is thrombocytosis, NOS reportable? | Updated May 2026 Thrombocytosis, NOS is not reportable for any year of diagnosis.
Unless the disease is specified as primary, idiopathic, essential, or the physician states there is a myeloproliferative neoplasm, the term thrombocytosis, NOS is not reportable. Thrombocytosis, NOS, is the presence of high platelet counts in the blood. Thrombocytosis can be associated with chronic infections and other diseases as well as with myeloproliferative disease.
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2010 | |
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20100080 | Reportability--Heme & Lymphoid Neoplasms: Is the term "thrombocytopenia" equivalent to the term "refractory thrombocytopenia" and should be a subsequent primary if it follows a treated diagnosis of pancreatic cancer? |
Updated May 2026 Thrombocytopenia NOS is not a reportable diagnosis for any diagnosis year. Thrombocytopenia and Refractory Thrombocytopenia are not the same disease. Thrombocytopenia is caused by a decreased number of platelets in the blood. Non-malignant causes include disseminated intravascular coagulation (DIC), drug-induced non-immune thrombocytopenia, drug-induced immune thrombocytopenia, hypersplenism, immune thrombocytopenic purpura (ITP), thrombotic thrombocytopenic purpura, and infections of the bone marrow. |
2010 | |
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20130073 | Reportability--Brain and CNS: Is Rosai-Dorfman disease a neoplastic reportable disease process if it occurs in the brain? See Discussion. |
The pathology report diagnosis is: Cranium, right temporal area, resection of intradural, extra-axial mass: Severe acute and chronic inflammation, histiocytic reaction, and proliferative fibrosis. See comment. Comment: Among potential alternative considerations are an infectious process, or non-infectious inflammatory CNS lesions such as inflammatory pseudotumor, Rosai-Dorfman disease, plasma cell granuloma, idiopathic hypertrophic pachymeningitis, and inflammatory myofibroblastic tumor. The clinicians discuss this and review other chart information and conclude the patient has a clinical diagnosis of Rosai-Dorfman disease. This is a rare disorder characterized by proliferation of histiocytes. |
Updated May 2026 This case is not reportable for cases diagnosed prior to 2021. Rosai-Dorfman disease is not listed in the ICD-O-3. To be reportable, a neoplasm must be listed in the ICD-O-3 and originate in a reportable brain/CNS site. For cases diagnosed 2021+, Rosai-Dorfman disease is reportable as 9749/3. |
2013 |
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20110018 | Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are to be abstracted for a case with a history of follicular lymphoma, grade 2 and a subsequent splenectomy diagnosis of diffuse large B-cell lymphoma? See Discussion. |
The patient was treated over a period of time for follicular lymphoma, grade 2. The oncologist thought the spleen was congested and removed it. The diagnosis was DLBCL. |
Updated May 2026 This case is accessioned as two primaries per Rule M10 which states to abstract multiple primaries when a neoplasm is originally diagnosed as a chronic neoplasm and there is a second diagnosis of an acute neoplasm after the initial clinical workup of the chronic disease is completed. The first primary is follicular lymphoma, grade 2 [9691/3] and it is a chronic neoplasm. The second primary is diffuse large B-cell lymphoma (DLBCL) [9680/3] and it is an acute neoplasm |
2011 |
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20140017 | Multiple Primaries--Heme & Lymphoid Neoplasms: 2012 path report for removal of an "axillary mass" which consists of 80% diffuse large B-cell lymphoma (DLBCL) and 20% follicular lymphoma. In the original manual, Module 6 instructed us to code as a single primary, DLBCL. However, the multiple primary calculator says each disease is a separate primary. When I looked them up in the data base, I did not get an option to review a current manual. Can you please advise? |
Updated May 2026 The Multiple Primaries calculator is not applicable for this case. In this case, there are two NHLs in the same location at the same time. Apply Rule M4, this is one primary. Per Note 7 under Rule M4, go to Rules PH11and PH15 to assign primary site and histology. Rule PH11 states to code to the site of the origin (axillary mass) and to diffuse large b-cell lymphoma (9680/3) when DLBCL and any other non-Hodgkin lymphoma (follicular in this case) are present in the same location at the same time. Code as a single primary with histology Diffuse Large B-Cell Lymphoma.
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2014 | |
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20130125 | Reportability--Heme & Lymphoid Neoplasms: Is self-healing Langerhans cell histiocytosis (LCH) of the skin reportable? | Updated May 2026 Self-healing LCH usually happens when the disease is confined to the skin. The term "self-healing" means that the neoplasm regressed without treatment. This is a known phenomenon.
This is a reportable primary as Langerhans cell histiocytosis (LCH) [9751/3] for years 2010-2020.
Starting in 2021, this would be 9751/1 and only be reportable if it occurred in the CNS. |
2013 |
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