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Report Produced: 02/28/2026 22:25 PM

Report Question ID Question Discussion Answer Year
20110116

MP/H/Histology--Lung: What is the histology code for "heterologous biphasic sarcomatoid carcinoma of the lung with prominent rhabdomyoblastic and adenoca differentiation"?

The expert pathologist recommends coding histology to 8980/3 [Carcinosarcoma] for this combination histology.

Expert consultation: The designation "carcinosarcoma" is given when the pathology shows differentiation in both the sarcomatous (rhabdomyoblastic) and carcinomatous (adenoca) elements. This is emphasized in the path for this case with the term "biphasic." The term "heterologous" mean that the sarcomatous component is of a type not normal to lung. Rhabdomyoblastic means skeletal muscle differentiation. Because skeletal muscle is not normally found in lung it is heterologous. If it were smooth muscle, it would be homologous because smooth muscle is found in lung (as a part of the bronchi).

 2011
20110033 Multiple primaries--Heme & Lymphoid Neoplasms: How many primaries are to be abstracted when a right parotid mass shows "MALT Lymphoma with transformation to Diffuse Large B-cell Lymphoma" but the patient has no known history of MALT lymphoma?

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

This is a single primary per Rule M4 which states to abstract a single primary* when two or more types of non-Hodgkin lymphoma are simultaneously present in the same anatomic location(s), such as the same lymph node or lymph node region(s), the same organ(s), and/or the same tissue(s). The histology is coded to 9680/3 per PH11which states to code histology to diffuse large B-cell lymphoma (DLBCL) (9680/3) when DLBCL and any other non-Hodgkin lymphoma are present in the same lymph node(s), lymph node region(s), organ(s), tissue(s) or 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.

2011
20110119 MP/H Rules/Primary Site--Bladder: How is the primary site coded when a patient is diagnosed with synchronous, non-invasive papillary urothelial carcinomas of the bladder and renal pelvis? See Discussion.

This patient was diagnosed with at least three non-invasive papillary urothelial carcinomas of the bladder in 11/09. The patient subsequently underwent a complete nephroureterectomy in 12/09 showing a single non-invasive papillary urothelial carcinoma of the renal pelvis.

Per the MPH Rule M8, this is a single primary. Is the primary site to be coded C659 [renal pelvis] or C689 [urinary system, NOS]?

Assign code C68.9 when multiple tumors are found in multiple urinary sites at the same time. 2011
20110065 Multiple primaries/Histology--Heme & Lymphoid Neoplasms: How many primaries are to be abstracted when a skin (right thigh) biopsy is consistent with mycosis fungoides (cutaneous T-cell lymphoma)? See Discussion. Applying rule M15 (multiple primaries calculator) indicates this is two primaries. Is this correct?

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

Code the primary site to C447 [skin of lower limb] and code histology to 9700/3 [mycosis fungoides]. he pathologist wrote in parentheses that this was cutaneous (i.e. primary site is skin) and that it is a T-cell lymphoma (mycosis fungoides is a T-cell lineage). So the parenthetical statement was not a separate diagnosis; rather a general classification of the mycosis fungoides. "CTCL" is listed under the Alternate Names section of the Heme DB. CTCL is an abbreviation for cutaneous T-cell lymphoma. CTCL is a synonym for mycosis fungoides. This is a single primary per M2 which states to abstract a single primary when there is a single histology.

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.

2011
20110010

Multiple primaries--Heme & Lymphoid Neoplasms: Is a recently diagnosed granulocytic sarcoma followed by a diagnosis of AML two primaries? See Discussion.

6/10/10 Axillary lymph node biopsy was compatible with AML. The physician noted that the patient was diagnosed with granulocytic sarcoma [9930/3] in the axillary node.

6/15/10 Bone marrow biopsy compatible with AML FAB M1 [9873/3].

After induction, a second bone marrow biopsy on 6/30/10 shows persistent/refractory AML. The physician noted that the second biopsy is compatible with AML FAB M7 [9910/3].

Is the granulocytic sarcoma a chronic form of the disease? If so, do we have one primary diagnosed 6/10/10 with primary site coded to C42.1 and histology coded to 9873/3? Does the second biopsy on 6/30/10 represent the same primary even though the persistent disease is now FAB M7?

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

Granulocytic sarcoma does not transform into AML. Per the Abstractor Notes section in the Heme DB under the term "granulocytic sarcoma," it indicates that "Myeloid sarcoma (also known as granulocytic sarcoma) may occur de novo; it may precede or coincide with AML, or represent an acute blastic transformation of myelodysplastic syndromes." This means that when granulocytic/myeloid sarcoma is seen with AML, it represents a solid manifestation of the systemically involved AML. In other words, it is all the same disease process (coded to AML) if it occurs simultaneously (i.e., at the same time or within 21 days of on another).

Apply Rule M3 to this case which states to abstract a single primary when a sarcoma is diagnosed simultaneously or after a leukemia of the same lineage. Code the primary site to C421 [bone marrow] with histology coded to 9873/3 [acute myeloid leukemia, M1]. The FAB category is an older classification that is seldom used. Changes from FAB 1 to FAB 7 do not constitute a new primary.

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.

 2011
20110008 MP/H Rules/Histology--Vulva: How is histology coded for VIN III with focal invasion? See Discussion. Per SINQ 20000442, the histology for CIN III with microinvasion is coded to 8077 [squamous intraepithelial neoplasia, grade III] per the matrix system rules, with a behavior code of /3 [malignant]. Coding the histology to 8077/3 per the matrix principle causes IF25_3 and MorphICDO3_P1 edits to fail. Flagging the first error resolves any reporting issue. How is the MorphICDO3_P1 edit resolved? Assign 8076/3 [squamous cell carcinoma, microinvasive] for VIN III with focal invasion. This applies to all terminologies listed under 8077/2. The SINQ question from 2000 will be retired. 2011
20110004 MP/H Rules/Histology--Breast: Which MP/H rule applies when coding the histology field for a tumor described as a "metaplastic carcinoma, adenosquamous and spindle cell type"? See Discussion.

Per path comment: "The neoplasm is composed of adenosquamous carcinoma which merges with spindle cell carcinoma. The cystic component shows a mixed squamous and ductal epithelial lining which shows cytologic atypia and mitotic activity and can be seen to merge with invasive carcinoma. The features suggest the possibility that the tumor may have arisen from a sclerosing and cystic papilloma with squamous metaplasia, although a clearly benign component is not evident."

Would MP/H rule H19 apply based on the pathology report comment resulting in histology for the case being coded to 8255 [adenocarcinoma with mixed subtypes]? Or, would MP/H rule H14 apply based on the final diagnosis resulting in histology for the case being coded to 8575 [metaplastic carcinoma] because adenosquamous and spindle cell are not specific types of metaplastic carcinoma?

This is a metaplastic carcinoma as stated in the path diagnosis. Rule H14 applies. Assign code 8575/3. According to the WHO Classification, metaplastic carcinoma is a general term for a group of neoplasms characterized by a mixture of adenocarcinoma with dominant areas of spindle cell, squamous, and/or mesenchymal differentiation.

Use the Multiple Primary and Histology Coding Rules Manual for cases diagnosed 2007 or later to determine the histology for this case. Code histology to 8575/3 [metaplastic carcinoma] as stated in the pathology diagnosis.

Open the Multiple Primary and Histology Coding Rules manual. Choose one of the three formats (i.e., flowchart, matrix or text) under the Breast Histo rules determine histology for the case.

Go to the SINGLE TUMOR: INVASIVE CARCINOMA ONLY module. The rules are intended to be reviewed in consecutive order within the module from Rule H10 to Rule H19. You stop at the first rule that applies to the case you are processing.

Code the histology when only one histologic type is identified. According to the WHO Classification, metaplastic carcinoma is a general term for a group of neoplasms characterized by a mixture of adenocarcinoma with dominant areas of spindle cell, squamous, and/or mesenchymal differentiation.

2011
20110009 Diagnostic confirmation/Date of diagnosis--Heme & Lymphoid Neoplasms: How are these fields coded for a 2/11/10 negative bone marrow biopsy with cytogenetic abnormalities if the physician makes a clinical diagnosis of refractory cytopenia with multilineage dysplasia on 2/25/10? See Discussion.

2/11/10 bone marrow biopsy revealed "mild trilineal dysplastic changes in conjunction with chronicity of cytopenias is worrisome for MDS." Cytogenetics are positive for 5q deletion. Clinicopathologic correlation required for final diagnosis. On 2/25/10 the physician confirms a diagnosis of refractory cytopenia with multilineage dysplasia.

Is the date of diagnosis 2/11/10 with diagnostic confirmation of 3 or 2/25/10 with diagnostic confirmation of 8?

The date of diagnosis is 2/25/10 and diagnostic confirmation is coded to 8 [clinical diagnosis only].

As the cytogenetics state, you need clinicopathologic correlation to get confirm a reportable diagnosis. There is no reportable diagnosis from the bone marrow biopsy. The cytogenetics were done (the pathologic part) and then the physician confirmed refractory cytopenia with multilineage dysplasia [9985/3] (the clinical part). The diagnostic process and the determination of a reportable diagnosis were completed when the clinician made the statement that this is refractory cytopenia with multilineage dysplasia.

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.

2011
20110062 Histology--Heme & Lymphoid Neoplasms: Is diffuse large B-cell lymphoma, germinal cell type coded to diffuse large B-cell lymphoma?

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

Per Rule PH30, use the Heme DB, determine the histology when rules PH1-PH29 do not apply. Code diffuse large B-cell lymphoma, germinal cell type to 9680/3 [diffuse large B-cell lymphoma (DLBCL)][9680/3]. Under the Alternate Names section of the Heme DB, these two terms are synonyms that share the same histology code.

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.

2011
20110035 Primary site--Heme & Lymphoid Neoplasms: How is the primary site coded when both a lymph node biopsy and peripheral blood are positive for CLL/SLL? See Discussion. Per Module 3, Rules PH5 and PH6 in the Hematopoietic Manual, it states that CLL has peripheral blood involvement and SLL does not.

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] and histology to 9823/3 [CLL/SLL]. Per Rule there may be involvement of bone marrow AND lymph node(s), lymph node region(s), organ(s), or tissue(s) but as long as the peripheral blood and/or bone marrow are involved, the primary site is bone marrow (C421).

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.

2011