MP/H Rules/Histology--Breast: How is histology coded, and which MP/H rule applies for a diagnosis of ductal carcinoma in situ with clear cell features? See Discussion.
MP/H Rules/Histology--Breast: How is histology coded when a nipple biopsy shows Paget disease but the mastectomy specimen shows only infiltrating ductal carcinoma in the breast tissue and the nipple is negative for Paget disease? See Discussion.
MP/H Rules/Histology--Breast: How is histology coded if a lumpectomy reveals multifocal ductal carcinoma in situ spanning an area of 0.9-1.2 cm with close margins and a subsequent mastectomy reveals only a single focus of lobular carcinoma in situ measuring 0.2 cm in the UOQ, remote from all surgical margins? See Discussion.
MP/H Rules/Histology--Breast: How is histology coded for an "infiltrating papillary carcinoma" of the breast when there is no mention of ductal or adenocarcinoma in the pathology report?
MP/H Rules/Histology--Breast: How is histology coded for a single tumor with ductal and tubular features in only the invasive component and not in the in situ component? See Discussion.
MP/H Rules/Histology--Breast: How is histology coded for a diagnosis of "metaplastic carcinoma with the sarcomatous component of high grade sarcoma with focal areas of osteoid formation"? See Discussion.
MP/H Rules/Histology--Breast: How is histology coded for a breast primary with a final diagnosis of "infiltrating duct carcinoma with apocrine features"? See Discussion.
MP/H Rules/Histology--Breast: How do you code histology for a breast tumor when the comment section of the pathology report compares the current resected specimen with a previous needle biopsy? See Discussion.
MP/H Rules/Histology--Breast: Given that the current MP/H rules do not recognize specific types of lobular carcinoma, should the histology for an invasive pleomorphic lobular carcinoma be coded to 8022/3 [pleomorphic carcinoma] or 8520/3 [lobular carcinoma]? See Discussion.
MP/H Rules/Histology--Brain: How many primaries are reported and what is the histology for a single brain tumor described as a low grade astrocytoma at the time of the initial partial resection and a low grade glioneuronal neoplasm at the time of the subsequent total resection? See Discussion.
An official website of the United States government
Home