An official website of the United States government
Home
SEER Inquiry System - Report
Produced: 11/01/2025 6:42 AM
Question 20190021
Inquiry Details
References:
2018 SEER Manual. final version, p. 87
Question:
Sequence Number Central--Brain and CNS: How is Sequence Number--Central coded for current/recent benign brain/CNS tumors when the patient has a history of an additional non-malignant CNS tumor diagnosed prior to 2004 (when these tumors became reportable to SEER)? See Discussion.
Discussion:
We are confused by the SEER Program Coding and Staging Manual 2018 instruction that states: This sequence number counts all tumors that were reportable in the year they were diagnosed even if the tumors occurred before the registry existed or before the registry participated in the SEER Program. Does this rule apply to benign and borderline CNS tumors?
Does this mean that any non-malignant CNS tumor diagnosed prior to 2004 should NOT be included in the sequencing (in the 60s range) if we were collecting non-malignant CNS per our State Registry reporting requirements prior to 2004?
Example: Patient has a March 2017 diagnosis of right sided vestibular schwannoma (C724-1, 9560/0) and a prior history of left sided acoustic neuroma (c724-2, 9560/0) diagnosed in 1991. How should sequence be coded for each primary in our file?
Answer:
For your example, code the Sequence Number--Central as 61 for the 1991 diagnosis if this was a state registry requirement in 1991 and code 62 for the 2017 diagnosis.
