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National Cancer Data Base - Data Dictionary PUF 2013

Histology

DD_category: 
CANCER IDENTIFICATION
PUF Data Item Name: 
HISTOLOGY
length: 
4
Allowable values: 
See ICD-O-3 and the Hematopoeitic and Lymphoid Manual
Description: 
Records the tumor histology of all cases reported to the NCDB in International Classification of Disease for Oncology, Third Edition (ICD-O-3) terms.
Analytic Note: 

This item is the product of the application of the conversion rules expressed in ICDO2-3_SEER.xls (http://seer.cancer.gov/tools/conversion/index.html) for cases diagnosed prior to 2001, which were originally coded according to ICD-O-2, and the ICD-O-3 codes reported by registries for cases diagnosed in 2001 and subsequently.  In addition, beginning with 2010 diagnoses, malignant hematopoietic and lymphoid histology codes not yet printed in the ICD-O-3 were added.  For a list of the added codes, consult http://seer.cancer.gov/tools/heme/; the codes are in Appendix D of the Hematopoietic and Lymphoid Manual which can be accessed from the online or downloadable database files on that site.  Hematopoietic and lymphatic cancers diagnosed prior to 2010 retain the earlier ICD-O-3 values.