SEER Inquiry System - Search

Primary Site/Brain and CNS: How is primary site coded when the ICD-O-3 provides a sub-site-associated morphology code and the only information available to code primary site for a particular diagnosis indicates a non-specific/not otherwise specified (NOS) site code? See Discussion.

Primary site/Biliary tract--Ampulla of Vater: What is the correct primary site code for intra-ampullary and periampullary adenocarcinoma, C241 (8144/3) or C249? See Discussion.

Primary Site--Vulva: What is the primary site of patient with an excision of a left vulvar cystic mass showing focal mammary-type ductal carcinoma in situ (DCIS) on 11/06/2020? See Discussion.

Primary Site--Testis:  What is the prmary site for a 38 y/o male diagnosed with testicular cancer in a formerly undescended testis that was treated with orchiopexy at age 10-11?  See discussion.

Primary Site--Stomach: How do I code the primary site when the operative report and pathology report state that the tumor site is incisura of the stomach?

Primary Site--Skin:  Are perianal skin primaries within 5 cm of the anus coded as perianal skin (C44.5) or anus (C21.0).  See Discussion.

Primary Site--Skin: Should cutaneous leiomyosarcoma be coded to primary skin of site (C44_) or soft tissue (C49_)?

Primary Site--Sarcoma: What is the best primary site code for an undifferentiated sarcoma of the pulmonary artery? See discussion.

Primary site--Pancreas: Is the uncinate process of the pancreas coded to C259, C250, or C257?

Primary site--Other and Unspecified Urinary Organs: What is the topography code for a Skene's gland adenocarcinoma?