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20091072 | Histology--Brain and CNS: How is histology coded for a "rosette-forming glioneuronal tumor" of the fourth ventricle? | Assign histology code 9505/1 [Ganglioglioma, NOS].
Rosette-forming glioneuronal tumor of the 4th ventricle is a new WHO entity. There is no current ICD-O-3 code for this. The best code available at this time is 9505/1. |
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20091084 | Primary site--Colon: How do you determine the correct subsite when there is conflicting information in different reports? Are there priority rules for coding subsite for sites other than Head and Neck? See Discussion. | The path report for a hemicolectomy says, " Specimen: left colon..." and the microscopic says, "...received in formalin designated left colon..." The Operative procedure report says, "Postoperative diagnosis - splenic flexure tumor." The text of this report says, "Mobilizing the splenic flexure mass was incredibly difficult..." and then goes on to describe exactly how and where it was resected. The discharge summary says adenosquamous carcinoma of the splenic flexure. SINQ20051010 says to use the pathology report first, but this was written before the new MP/H rules. | Use the operative report information to code primary site in this case. It is more accurate. The operative report is usually a better source of location information compared to the pathology report. The pathologist can only reiterate the location as it was reported to him/her. The 2007 SEER manual states "Unless otherwise instructed, use all available information to code the site," page 69. |
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20091015 | MP/H Rules/Histology--Gallbladder: What histology is coded for a tumor described as "90% high grade neuroendocrine ca, large cell type; and 10% low grade adenocarcinoma, conventional type"? | For cases diagnosed 2007 or later: MP/H Rule H17 for Other Sites applies. Code the histology 8140 [adenocarcinoma]. The ICD-O-3 code for large cell neuroendocrine carcinoma is 8013 and the code for adenocarcinoma is 8140. |
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20091044 | Radiation Therapy: Would tomotherapy, described as targeted IMRT, be coded as external beam? | Code tomotherapy as 1 [Beam radiation]. Tomotherapy is external beam radiation therapy. It is a type of IMRT. Intensity-modulated radiation therapy (IMRT) is an advanced mode of high-precision radiotherapy that utilizes computer-controlled x-ray accelerators to deliver radiation. Tomotherapy is a CT image guided IMRT. |
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20091056 | MP/H Rules/Histology--Ovary: How is histology coded for an ovarian tumor diagnosed as an "ovarian clear cell cystadenocarcinoma"? See Discussion. | Final diagnosis for a resected ovary is ovarian clear cell cystadenocarcinoma. In applying the MP/H rules, rule H16 does not apply because cystadenocarcinoma is not included in Table 2. As a result rule H17 applies. Thus it appears the histology should be coded 8440. Cystadenocarcinoma is a specific histologic type and it is assigned the numerically higher histology code. This result differs from pre-2007 SINQ entry 20041045 that states: Code histology to 8310/3 [Clear cell adenocarcinoma, NOS]. This is consistent with the WHO Classification of Tumours and reflects the current practice of placing less emphasis on "cyst-" prefix for ovarian malignancies. | For cases diagnosed 2007 or later: Assign code 8310 [Clear cell adenocarcinoma] according to rule H13. Ignore "cyst" when determining the histologic type for ovarian malignancies. For this case, the only histology is clear cell. The histologies for the common ovarian epithelial malignancies are serous, mucinous, endometrioid, clear cell, and transitional cell/Brenner. This clarification will be added to the rules in the next revision. |
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20091061 | Multiplicity Counter--Head & Neck: How is this field coded when a patient has carcinoma in the same location as a previous primary but it is unknown if there was a disease-free interval? See Discussion. | Patient was diagnosed with squamous cell carcinoma, single tumor of the right true vocal cord in May 2008. Tumor was treated with radiation therapy and chemotherapy. Excision of right vocal cord mass in February 2009 shows squamous cell carcinoma. | Assign code 01 [one tumor only] for the example provided (see discussion). Given the information provided, there is no reason to suspect that the February 2009 diagnosis represents new tumor; therefore, it does not affect the multiplicity counter. It appears that this was the treatment plan for the original diagnosis in May 2008: radiation and chemo followed by excision of the mass. | 2009 |
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20091119 | MP/H Rules/Multiple primaries--Lung: How many primaries are to be reported for an adenocarcinoma of the lung in the right middle lobe of the lung and bronchioalveolar carcinoma, non-mucinous type in the right upper lobe? See Discussion. |
Bilobectomy revealed two tumors, adenocarcinoma in the right middle lobe and bronchioalveoar carcinoma non-mucinous type in the right upper lobe. MP/H rule M10 states that tumors with non-small cell carcinoma (8046) and a more specific non-small cell type (chart 1) are a single primary. Does rule M10 apply to only those cases for which one tumor is stated to be non-small cell, NOS? Or do we use chart 1 to identify specific subtypes? For this case, using chart 1, would we note that bronchioalveolar is a subtype of adenocarcinoma and count this case as a single primary? Most of the MP/H rules schemas have a rule making an adenocarcinoma and a more specific type of adenocarcinoma a single primary. Would we apply rule M10 to this case and count it as a single primary? Or would we move on to rule M11 and count the case as two primaries? |
For cases diagnosed 2007 or later, Rule M11 applies. Accession two primaries. Rule M10 applies only to cases for which one tumor is stated to be "non-small cell carcinoma." |
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20091030 | MP/H Rules/Multiple Primaries--Thyroid: How many primaries should be coded if there is a clinical diagnosis of recurrent thyroid carcinoma in 3/08 in a patient with a history of thyroid carcinoma diagnosed in 1995 with a 2002 clinical recurrence? See Discussion. | Thyroid carcinoma diagnosed in 11/95 and treated with total thyroidectomy (although path report only mentions the left lobe) and ablation. Elevated thyroglobulin level in 11/02, stated to have recurrent carcinoma and again treated with ablation. History on this case states patient had a near total thyroidectomy at diagnosis. Patient is seen again at a third hospital 3/08. Diagnosis again is recurrent carcinoma apparently because of a thyroid mass that is palpable. No treatment was performed and patient expired 4/08. Is this a new primary because of MP/H rule M10? | For cases diagnosed 2007 or later: The pathology report takes precedence over the other information when there is a discrepancy. Based on the information available, only the left thyroid lobe was removed 11/95.
Use the 2007 MP/H rules to evaluate new tumors. If the 3/08 diagnosis represents a new tumor, use the MP/H rules. If the diagnosis in 3/08 is not new tumor, the MP/H rules do not apply.
For this case, a new tumor in 3/08 would be a new primary using rule M10 for Other Sites. |
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20091050 | Date of Multiple Tumors--Breast: How is this field coded when a second breast tumor is found at mastectomy two months after the original breast cancer was diagnosed, but during initial workup and treatment? See Discussion. | Breast cancer was diagnosed on core biopsy on 02-27-07. It was not known that the breast was harboring 2 tumors until mastectomy was done on 4-01-07. Both tumors are counted as one primary. | Code "Date of Multiple Tumors" field to the date of the mastectomy. That is the date that multiple tumors were discovered. | 2009 |
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20091081 | Reportability/Histology--Brain and CNS: Is an "inflammatory myofibroblastic tumor" reportable for Brain and CNS sites? See Discussion. | Histology code 8825/1 (Inflammatory Myofibroblastic Tumor) is not listed in the ICD-0-3 Primary Brain and CNS Site/Histology listing for reportable Brain/CNS tumors. | If the inflammatory myofibroblastic tumor is primary in one of the sites specified below and diagnosed 1/1/2004 or later, it is reportable.
Reportable brain and CNS tumors are any benign and borderline primary intracranial and CNS tumors with a behavior code of /0 or /1 in ICD-O-3 diagnosed 1/1/2004 and later, of the following sites:
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