Primary site/Surgery of Primary Site--Lymphoma: What is the primary site for lymphoma involving lymph nodes and tonsil? Is a tonsillectomy coded as surgery for lymphoma? See Discussion.
CS Lymph Nodes--Breast: What code should be used for the the following? There is no mention of LNS clinically; the patient has neoadjuvant therapy; and the LNS are matted pathologically.
MP/H Rules/Multiple primaries--Lung: If a 1.7 cm LUL lung tumor is not treated surgically, would a 2.1 cm tumor in the same lobe three years later be a new primary? See Discussion.
MP/H Rules/Histology--Rectum: When not specifically mentioned as part of the histology, is the adenoma a second histologic type, or just a further physical description of the tumor? See Discussion.
MPH Rules/Behavior--Breast: Would a positive right axillary node following DCIS of the right breast indicate the presence of a new primary? See Discussion.