MP/H Rules/Histology--Colon: Which MP/H rule applies and what is the histology code for a "large cell neuroendocrine carcinoma (arising in adenocarcinoma)"? See Discussion.
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.
Histology--Heme & Lymphoid Neoplasms: How is the pre-2010 histology coded for a "follicular grade 2, non-Hodgkin lymphoma with marginal zone B-cell differentiation"? See Discussion.
MP/H Rules/Multiple primaries--Bladder: How many primaries are to be abstracted and how are the histologies coded when a bladder resection demonstrates tumor with invasive small cell neuroendocrine carcinoma [8041/3], high grade papillary urothelial carcinoma in situ [8130/2], adenocarcinoma in situ [8140/2], and multifocal flat urothelial carcinoma in situ? See Discussion.
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.
Multiple primaries--Heme & Lymphoid Neoplasms: Is a recently diagnosed granulocytic sarcoma followed by a diagnosis of AMLÂ two primaries? See Discussion.
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