Sequence Number Central--Brain and CNS: How is Sequence Number--Central coded for current/recent benign brain/CNS tumors when the patient has a history of an additional non-malignant CNS tumor diagnosed prior to 2004 (when these tumors became reportable to SEER)? See Discussion.
Solid Tumor Rules (2018)/Histology--Head & Neck: What table in the Head and Neck Solid Tumor Rules applies to tumors of the lip (C000-C009)? The rules apply to all tumors in sites C000-C148, C300-C339, C410, C411, C442 and C479, but none of the histology tables include the lip. See Discussion.
Solid Tumor Rules 2018/Histology--Brain and CNS: How is histology coded for a single meningioma tumor when the histology is a meningioma comprised of multiple specific subtypes/variants? See Discussion.
Histology--Thyroid: Should any mention of encapsulated be included in the histology coding (8343/3 vs. 8260/3) for papillary thyroid carcinoma cases? See Discussion.
Reportability--Heme & Lymphoid Neoplasms: The term indolent systemic mastocytosis is listed in the 2018 ICD-O-3 Histology Update table with borderline behavior (9741/1). However, smoldering systemic mastocytosis is listed in the Hematopoietic and Lymphoid Database (Heme DB) as an alternate name for histology 9741/3. Are smoldering systemic mastocytosis and indolent systemic mastocytosis synonymous? If so, should smoldering systemic mastocytosis also be removed from the Heme DB alternate names listing? See Discussion.
Update to current manual/SS2018--Breast: Should Code 3 of the Summary Stage 2018 (SS2018) for Breast designate the intramammary and infraclavicular lymph nodes as being ipsilateral? Similarly, should Code 7 designate infraclavicular lymph nodes as contralateral/bilateral? Laterality (ipsilateral, contralateral/bilateral) is included for axillary and internal mammary nodes in the respective codes.
Update to current manual/EOD 2018/EOD Primary Tumor--Pelvic Sites: Should Note 6 in Extent of Disease (EOD) Primary Tumor for the schemas Fallopian Tube, Ovary, and Primary Peritoneal Carcinoma be revised to exclude pelvic sites? See Discussion.
Laterality--Head and Neck: Were the topography codes C090 and C091 intentionally left off of the Sites for Which Laterality Codes Must Be Recorded table in the 2018 SEER Manual? The codes were also removed from Table 10 in the 2018 Solid Tumor Rules for Head and Neck but appear under coding instructions 1b. and 6b. in the manual.
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