Behavior--Lung: How is behavior to be coded for a diagnosis of adenocarcinoma of a lung tumor that is further classified per the CAP protocol as, "non-mucinous bronchiolo-alveolar carcinoma (adenocarcinoma in situ)" while the pathologist also classifies the tumor as pT1b, pN0? See Discussion.
Reportability/Histology: Is the diagnosis "low-grade neuroendocrine neoplasm/carcinoid tumor with expression of gastrin (consistent with gastrinoma)" reportable with the histology code 8240/3 [carcinoid] or 8153/3 [malignant gastrinoma]? See Discussion.
Surgery of Primary Site--Breast: Is a "nipple sparing mastectomy" coded to 30 [subcutaneous mastectomy] or 40 [total (simple) mastectomy] if the nipple/areolar complex was not removed but the pathology specimen indicates some breast skin was removed? See Discussion.
Residence at dx: After living elsewhere (Florida) and traveling around the country in an RV with his spouse, is a patient a resident of this area for either primary if he was diagnosed with his first primary less than a month after arriving in the area and a second primary more than a year after parking his RV here?
MP/H Rules/Multiple primaries--Breast: How many primaries are accessioned when a pathology specimen reveals one tumor with invasive mucinous carcinoma [8480/3] and a second tumor with in situ ductal carcinoma, solid and cribriform types [8523/2]?
MP/H Rules/Histology--Bladder: How is this field coded for a patient with ureter specimen with "high grade urothelial carcinoma with adenocarcinoma differentiation" and a TURB specimen with "urothelial ca, high grade, a biphasic pattern with cautery-distorted urothelial carcinoma and adenocarcinoma"?
MP/H Rules/Histology/Behavior--Ovary: How are these fields coded for a 20 cm borderline mucinous tumor with a 0.3 cm minor focus of intraepithelial carcinoma of the ovary that the pathologist stages as T1a?
Chemotherapy/Neoadjuvant treatment: Should neoadjuvant chemotherapy be coded for an incidental second primary discovered at the time of surgery? If so, how is the diagnosis date coded? See Discussion.
Histology--Heme & Lymphoid Neoplasms: Is histology coded to 9684/3 [malignant lymphoma, diffuse large B-cell, immunoblastic NOS] for a biopsy that reveals "diffuse large B-cell lymphoma, immunoblastic variant"?
First course treatment/Other therapy--Skin: How is PUVA [psoralen (P) and long-wave ultraviolet radiation (UVA)] coded when used for skin primaries such as melanoma and mycosis fungoides?
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