The histology and behaviour codes for neoplasms are represented as separate data-fields in the data Showcase for UK Biobank, i.e. 4-digit histology code data-field and 1-digit behaviour data-field. This document gives details on the codings used.

This resource can be downloaded or viewed using the link: ICDcancermorph.pdf

If you have wget available (typically on linux systems), then you can also obtain a copy using the command

 wget  -nd  biobank.ctsu.ox.ac.uk/ukb/ukb/docs/ICDcancermorph.pdf