Documentation for the ASCII Text Data Files

Registration is not required to download the documentation.

• TextData.Readme.txt (TXT, 8 KB) - a list and description of the ASCII text data files.
  • Case Counts in the ASCII Text Data Files (PDF, 106 KB)
  • SAS Code to Read ASCII Text Data Files (SAS, 12 KB)
• SEER Research Data Record Description (PDF, 1.2 MB) - data dictionary for 1973-2015 SEER incidence data files
• Data Dictionary for the Population Data Files - variable locations, file formats, and codes
• Population Estimates Used in SEER*Stat - methodologic discussion
• SEER Extent of Disease 1988 (PDF, 656 KB) - codes and coding instructions
• SEER Site Recode ICD-O-3
• International Classification of Childhood Cancer (ICCC)
• Primary Sites for which SEER Requires Laterality Information (PDF, 27 KB)
• County Codes (PDF, 103 KB)
• SEER Geo-Codes for Coding Place of Birth (PDF, 47 KB)
• Site-Specific Surgery Codes:
  • Two-Digit (1983-1997) (PDF, 91 KB)
  • 1998-2002 (PDF, 204 KB)
  • 2003+ - See Appendix C on the Historical Staging and Coding Manuals
• Race and Ethnicity Variable Changes
• Localized/Regional/Distant Stage Adjustment (SEER Historic and Summary stage variables)

Please send questions or comments to: seerweb@imsweb.com