SEER Inquiry System - Question 20021172 Details

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Produced: 10/14/2025 6:15 PM

Question 20021172

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Inquiry Details

References:

SEER EOD-88, 3rd Ed, 3

Question:

EOD-Extension--Head & Neck: How much information is needed for a head and neck primary in order to code extension to localized versus unknown? What code is used to represent this field when the only information for a buccal cavity primary is a positive aspiration of the buccal mass?

Discussion:

Answer:

For cases diagnosed 1998-2003:

Code the EOD-Extension to 99 [Unknown] for this case until more information is received. The available information does not describe the primary site and there is a complete lack of staging information.

Head and neck cancers spread early and often to nodes. Do not code the EOD-Extension to localized when the information is as limited as it is for this example.

Cancer Site Category:

Head & Neck

Data Item Category:

N/A

Other Category:

N/A

Year:

2002