Primary site--Heme & Lymphoid Neoplasms: Is C448 [overlapping lesion of skin] or C449 [skin, NOS] the appropriate site code for a 2008 diagnosis of mycosis fungoides involving over 40 percent of the skin surface, including both upper and lower extremities and trunk?
Primary Site--Breast: If a patient has multifocal tumors all in the upper outer quadrant of the breast, is the primary site coded to C-504 because all of the tumors are in UOQ or would the site be coded to C509 to reflect the fact that multiple tumors exist?
Primary site--Kidney, renal pelvis: Should primary site be coded C809 [unknown] or C649 [kidney] when a patient is diagnosed with renal cell carcinoma in a transplanted kidney?
Primary site: How is this field coded for a malignancy described as a "intracranial squamous cell carcinoma (8070) arising in a previous epidermoid cyst"? See Discussion.
Reason for No Cancer-Directed Surgery--Lung: How do you code this field for a lung primary that presents with metastasis to the bone and brain in which the oncologist's treatment plan includes only radiation and chemotherapy?
Surgery of Primary Site--Bladder: Do we code "random bladder biopsies" as an excisional biopsy (27) or as no cancer directed surgery (00) even if the only involvement mentioned on the pathology reports is "focal carcinoma in situ"?
Behavior--Breast: How is behavior coded when a biopsy shows in situ carcinoma with a focus suspicious for invasion and a subsequent excision/resection shows only in situ carcinoma?
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