Solid Tumor Rules/Histology--Thyroid: What is the histology code for sclerosing mucoepidermoid carcinoma with eosinophilla in the left thyroid and papillary thyroid carcinoma in the right thyroid? See Discussion.
Solid Tumors Rules/Histology--Head and Neck: How is histology coded for head and neck primaries when a tumor is diagnosed as an invasive squamous cell carcinoma with multiple subtypes? See Discussion.
Solid Tumor Rules/Histology--Bladder: How is histology coded for a transurethral resection of the bladder (TURB) diagnosis with multiple components? See Discussion.
First Course Treatment--Lymphoma: Is the first round of systemic therapy coded as first course of therapy or is it all the therapy given to achieve remission for a lymphoma case with multiple treatments? See Discussion.
When coding the Covid testing results, does SEER have any guidance on whether or not at home tests fall within reportability? For instance, if a medical provider says pt tested positive on an at home test, do we record that?
Tumor Size/Neoadjuvant Treatment: If a patient discontinues neoadjuvant therapy and then has surgery, how is the pathologic tumor size coded with the pathologic tumor size greater than the clinical tumor size? Currently, we are instructed to code 999 for the pathologic tumor size when neoadjuvant therapy is given; what happens when neoadjuvant chemotherapy is discontinued after 3 cycles (plan for 4 cycles)?
Histology--Lung: Is it acceptable to code histology as 8042/3 for a 2020 lung primary when the pathology report states only "oat cell carcinoma?" See Discussion.
Histology/Behavior--GI Tract: What is the difference between high grade dysplasia and severe dysplasia for tumors in the cervix and gastrointestinal (GI) tract? Are these terms synonymous with in situ/behavior code /2? See Discussion.
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