Grade, Differentiation--All Sites: Why was the decision made not to code all "3-component differentiation systems" the same way that Bloom-Richardson is coded? For example, SEER codes a low grade BR to 1 for the Differentiation field and a low grade for other grading systems to 2. See discussion.
Grade, Differentiation--Breast: Should the Bloom-Richardson (BR) grade (low, intermediate, high) have a higher priority than terminology (i.e., well differentiated)? See discussion.
EOD-Clinical Extension--Prostate: If the tumor arises in the prostatic apex, does that take priority over coding clinical extension based on the stage of cT1c? See discussion.
Surgery of Primary Site--Skin: Should Mohs surgery be code to 27 [Excisional biopsy] or 31 [Shave biopsy followed by a gross excision of the lesion]? See discussion.
EOD-Size of Primary Tumor/EOD-Extension--Breast: How do you code extension when the tumor in the breast is in situ and the regional axillary lymph nodes are positive? See discussion.
Reportability--Hematopoietic, NOS: Should we add the missing terms listed in the Abstracting and Coding Guide for the Hematopoietic Diseases to ICD-O-3 because these absent synonyms would not be identified during hematology casefinding? See discussion.
First Course Treatment: 1) When is Decadron (Dexamethasone) coded as cancer treatment? 2) When Decadron is given to a patient with multiple myeloma, is it coded as treatment only if given in combination with chemotherapy? See discussion.
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