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SEER Inquiry System - Report
Produced: 10/14/2025 1:39 PM
Question 20000429
Inquiry Details
References:
SEER EOD-88, 3rd Ed, 110a
Question:
Discussion:
Usually when a mammogram has a malignant diagnosis, the tumor is clinically palpable, but occasionally the tumor is not palpable.
For example, on the mammogram, lesions are identified in the breast. PE--the breasts are palpably normal. Breast biopsies--two ductal carcinomas, no statement of size. Mastectomy--no residual. Should the size be coded to 999 rather than 002?
Answer:
For cases diagnosed 1998-2003:
In the case you provided, code the EOD-Size of Primary Tumor field to 002 [Mammography/xerography diagnosis only with no size given (tumor not clinically palpable)]. A known code in the size field should always take precedence over 999 [Not stated]. Code size from the records in priority order as stated in EOD, from pathology, op report, PE, mammogram, etc. (See EOD for complete instructions.)
Code size as 999 only when there is a clinically palpable lesion with no size stated in the path, PE, or mammogram.
If there is a lesion seen on mammogram that is not clinically palpable, a stated size taken from the path or mammogram would take precedence over code 002; however, if there is no stated size, use code 002 rather than 999.
