SEER Inquiry System - Report
Produced: 10/07/2025 2:51 AM
Question 20061078
Inquiry Details
References:
#1: 2004 SEER Manual, 87. Rule 7
#2: ICD-O-3, 34. Rule K
Question:
Discussion:
Answer:
For tumors diagnosed prior to 2007:
Code 8490 [Signet ring cell carcinoma]. Histology coding Rule 7 is the only rule that applies to this diagnosis. Assign the numerically higher ICD-O-3 code.
For tumors diagnosed 2007 or later, refer to the MP/H rules. If there are still questions about how this type of tumor should be coded, submit a new question to SINQ and include the difficulties you are encountering in applying the MP/H rules.