SEER Inquiry System - Search

2024 SEER Manual/Primary Site--Breast: Is Primary Site coded as C504 or C501 based on the Solid Tumor Rules and the SEER Manual Breast Coding Guidelines? The pathology report reads "Right Breast 10:00 1 cm from the nipple."

Codes C502-C505 take priority over code C501. The description for C501 in the Solid Tumor Rules has "Area extending 1 cm around areolar complex."

Summary Stage 2000--Lymphoma: How is SEER SS2000 coded for an ocular adnexal lymphoma when it extends from the primary site to adjacent sites that are still orbital structures? See Discussion.

Surgery of Primary Site--Breast: Is the surgery code 42 or 52? Does it matter that the procedure states no axillary LN, but the pathology found 2 additional LN? See discussion.

First course treatment/Scope of Reg LN Surgery--Breast: How is Scope of Regional Lymph Node Surgery coded when the operative report does not agree with the actual number and type of nodes removed? Are we attempting to capture the intended surgery or the type and number of nodes removed? See Discussion.

Update to the Current Manual/SEER*RSA--SEER Site-specific Factor 1: The 2024 SEER Manual and SEER*RSA say that Codes 10-51 are hierarchical; use the highest code that applies (10 is highest, 51 is lowest). Should the guidance say that 51 is highest, 10 is lowest since code 10 is a HPV negative p16 test?

Update to Current Manual/Neoadjuvant Therapy--Pancreas:  How are the neoadjuvant items coded for a patient who has unresectable pancreatic cancer and starts chemotherapy but will be evaluated after X cycles to see if patient may become a surgical candidate?

Solid Tumor Rules (2018/2021)/Multiple Primaries--Skin Cancer:  How many primaries are assigned for sebaceous carcinomas using the Solid Tumor/Multiple Primaries/Histology Rules?  Does this scenario represent eight separate primaries?  See Discussion.

Primary site--Heme &Lymphoid Neoplasms: What is the primary site of two extraosseous plasmacytomas, with positive pathology of right orbit and left lung. The patient's bone marrow biopsy, flow, and peripheral blood smear were negative. Is this coded as 9732/3, multiple myeloma (Primary Site and Histology Rule PH2) with the primary site as C809 (PH27)? Or is the primary site C421 since code 9732 says primary site is always C421, though bone marrow came back as negative?

MP/H Rules/Multiple Primaries--Lung: Does lung MP/H Rule M6 apply to synchronous tumors only, metachronous tumors only, or both? See discussion.

MP/H Rules/Multiple primaries--Head & Neck: If a 1991 neuroesthesioblastoma [9522/3] of the nasal cavity has subsequent recurrences of the same histology but later "recurs" in 2008 with "sarcoma, NOS, high grade" on a biopsy and a "high grade fibrosarcomatous transformation of esthesioneuroblastoma" [8810/3] on resection, should the subsequent tumor be reported as a new primary if the clinician continues to refer to the tumor as a "recurrence"? See Discussion.