International classification of diseases for oncology 3rd edition icd o 3 purpose definition used principally in tumour or cancer registries for coding the site topography and the histology morphology of neoplasms usually obtained from a pathology report. The international classification of diseases for oncology icd o is a domain specific extension of the international statistical classification of diseases and related health problems for tumor diseases this classification is widely used by cancer registries it is currently in its third revision icd o 3 icd 10 includes a list of morphology codes they stem from icd o second edition icd o 2 that was valid at the time of publication. International classification of diseases for oncology icd o 3rd edition 1st revision 3rd ed view open 9789241548496 engpdf 5085mb. Icd o international classification of diseases for oncology international classification of diseases for oncology first revision third edition isbn 978 92 4 154849 6 icd o coverindd 1 11 21 13 850 am