Glossary · Terminology
ICD-O-3
International Classification of Diseases for Oncology, 3rd edition
ICD-O-3 is the WHO classification used mainly by cancer registries, coding each tumour on two axes: topography (the site) and morphology (the histology and behaviour).
It gives finer detail than the neoplasm chapter of ICD-10, which is why registry data is coded in ICD-O-3 and then converted to ICD codes for statistics.
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Definitions written by Anpheros from the official sources linked on each page. General information about standards and regulation, not legal or medical advice. All terms →