SEER Inquiry System - Search

Grade/Histology--Digestive System: What is the grade for neuroendocrine tumor (NET) or neuroendocrine carcinoma (NEC) of gastrointestinal morphologies described as: 1) NET G1 (M8240/3) and NET G2 (M8249/3) or 2) neuroendocrine carcinoma, low grade (M8240/3) and neuroendocrine carcinoma, well differentiation (M8240/3) and neuroendocrine carcinoma, moderate differentiation (M8249/3)? The SEER Instructions for Coding Grade for 2014+, Coding for Solid Tumors section, #3 state: Code the grade shown below (6th digit) for specific histologic terms that imply a grade. NET and NEC are not included in the specific terms.

MP/H/Histology--Breast: What MP/H Rule, histology, and behavior code for a breast primary apply to the following?

2 foci DCIS, solid, high grade (Grade 3) w/microca++

Primary Site--Stomach: How do I code the primary site when the operative report and pathology report state that the tumor site is incisura of the stomach?

Reportability/Histology-Gallbladder: Is high grade biliary intraepithelial neoplasia of the gallbladder reportable?

Reportability--Lung: Is a case of pulmonary metastatic leiomyoma (favored) vs. low grade leiomyosarcoma reportable, and if so, what is the primary site and histology code?  See Discussion.

Reportability--Brain and CNS: Is a colloid cyst at the foramen of Monro reportable?

Surgery of Primary Site--Melanoma: Please further explain the SEER Note under Melanoma surgery codes 30-36 for these two examples. Are both examples coded 31?

1. Shave bx: +melanoma in situ, +microscopic margins  Wide excision: no residual melanoma in situ

2. Shave bx: melanoma, +microscopic margin   Wide excision: Melanoma, margins negative (margin status negative but distance not stated)

MP/H Rules/Histology--Bladder: Can the histology for a high grade urothelial carcinoma described as having "extensive sarcomatoid dedifferentiation" be coded to sarcomatoid transitional cell carcinoma (8122/3)?

Example; TURBT, Final Diagnosis - Urothelial carcinoma, high grade. Type/grade comment: Extensive sarcomatoid dedifferentiation is present (40-50% of tumor volume).

Multiple primaries--Heme & Lymphoid Neoplasms: Could you please clarify Note 2 found in Rule M10, which is " 'Transformations to' (acute neoplasms) and 'Transformations from' (chronic neoplasms) are defined for each applicable histology in the database." Do the neoplasms being considered have to contain the words 'chronic' and/or 'acute'?

Surgery of primary site--Lung: Should microwave ablation be coded as treatment for lung cancer, and if so, how should it be coded?