CS Extension--Retinoblastoma: When the degree of extension differs between the retinas, how is extension coded for simultaneous bilateral retinoblastoma?
Primary Site/CS Extension--Lymphoma: Should CS Extension be coded to 22 [Involvement of spleen PLUS lymph node(s) BELOW the diaphragm] or 32 [Involvement of spleen PLUS lymph node(s) on both sides of the diaphragm] for the biopsy proven lymphoma in a retroperitoneal mass and a CT of the chest with nodes described as "indeterminate" or "calcified"? See Discussion.
Reportability/Behavior--Colon: Is a final diagnosis of "mucosal carcinoid" of the colon reportable with a behavior code 2 [in situ] or 3 [invasive] if the microscopic description states that a "malignancy is not appreciated"? See Discussion.
CS Extension/CS Lymph Nodes--Colon: What codes are used when large vessel invasion (V2 grossly evident) is stated to be present on a pathology report? See Discussion.
Chemotherapy--Breast: In the absence of more specific information, is the insertion of a port-a-cath one month after mastectomy enough documentation to code chemotherapy to 88 [Recommended]?
First Course Treatment--Unknown & ill-defined site: We have a case with an unknown primary site and the patient had chemoembolization into the hepatic artery. We don't know how to code this treatment. See Discussion.
Surgery of Primary Site--Melanoma: If the surgical margins are greater than 1 cm for length and width but less than 1 cm for depth, do we code surgery in the 30-33 range?