SEER Inquiry System - Report
Produced: 10/18/2025 5:21 PM
Question 20071098
Inquiry Details
References:
2007 SEER Manual, 90-92, 114
Question:
Discussion:
Answer:
This answer was provided in the context of CSv1 coding guidelines. The response may not be used after your registry database has been converted to CSv2.Multiplicity Counter/Date of Multiple Tumors
Apply the multiple primary rules first and record the number of tumors determined to be a single primary in Multiplicity Counter. Record the corresponding date in Date of Multiple Tumors. These data items may be updated once if future tumors are determined to be the same primary as the initial diagnosis.
CS Tumor Size
Include information gathered through
WHICHEVER IS LONGER.
Metastasis known to have developed after the diagnosis was established should be excluded.