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Report Produced: 05/06/2026 10:16 AM

Report Question ID Question
20071049 MP/H Rules/Histology--Colon: If a tubulovillous (TV) adenoma is in situ and other polyp(s) have an invasive component, does the in situ TV adenoma still have priority and should rule H18 be applied?
20120027 MP/H Rules/Histology--Colon: How is histology coded if a patient has two frank invasive adenocarcinomas in one segment of the colon and multiple tubular adenomas and hyperplastic polyps throughout the entire colon without a diagnosis of familial polyposis [FAP]? See Discussion.
20081098 MP/H Rules/Histology--Colon: How do you use Rule H5 or H6 to code "moderately diff adenoca with mucinous component"?
20110043 MP/H Rules/Histology--Breast: Which specimen should be used to code histology when a core biopsy revealed an unknown sized DCIS, comedo type and the partial mastectomy specimen showed only a 2mm focus of DCIS, solid pattern? See Discussion.
20071027 MP/H Rules/Histology--Breast: Which report and diagnosis should be used to code the histology if an excisional biopsy that removes the majority of the tumor has a diagnosis of "carcinoma," and the subsequent lumpectomy diagnosis is "microscopic residual disease consistent with infiltrating duct carcinoma"?
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.
20140012 MP/H Rules/Histology--Breast: What is the correct histology code for this final diagnosis of a breast tumor: INVASIVE POORLY DIFFERENTIATED DUCTAL CARCINOMA WITH SQUAMOUS DIFFERENTIATION (METAPLASTIC FEATURES)?
20091010 MP/H Rules/Histology--Breast: What histology is coded when a final diagnosis on a lumpectomy specimen states "adenocarcinoma" but the regional lymph nodes show "poorly differentiated adenocarcinoma with signet ring differentiation"? See Discussion.
20091011 MP/H Rules/Histology--Breast: What histology is coded for a tumor diagnosed as "intraductal papillary carcinoma (neuroendocrine differentiation)"? See Discussion.
20081035 MP/H Rules/Histology--Breast: What histology code is used for a single tumor, micropapillary carcinoma with components of mixed ductal and lobular carcinoma?