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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.
Classification structure
A bi-axial classification of the site and type of neoplasms.
The topography axis uses the ICD-10 classification of malignant neoplasms (except those categories which relate to secondary neoplasms and to specified morphological types of tumours) for all types of tumours, thereby providing greater site detail for nonmalignant tumours than is provided in ICD-10. An additional (non-ICD-10) topography code is provided to enable the site of haematopoietic and reticuloendothelial tumours to be identified.
The morphology axis provides five-digit codes ranging from M-8000/0 to M-9989/3. The first four digits indicate the specific histological term. The fifth digit after the slash or solidus (/) is a behaviour code which indicates whether a tumour is malignant, benign, in situ, or uncertain whether benign or malignant.
A separate one-digit code is also provided for histologic grading or differentiation.
Administrative status
Creation date: 1976
Last date change: 2000
Change description: Updates in nomenclature and Classification, with emphasis of changes on haematologic and neurologic neoplasms.
Reference documents
Available indexes:
A single combined alphabetical index for topography and morphology.
Available formats:
CSV database files
Training and training materials:
The European Network of Cancer Registries has provided training courses with the assistance of the International Agency for Research on Cancer, the European Commission and the United States National Cancer Institute
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http://www.encr.com.fr
Languages
Published: English, Flemish/Dutch, German, Japanese, Korean, Romanian, Turkish In preparation: French, Chinese, Czech, Portuguese
Relationships with other classifications
Correspondence between revisions
Correspondence tables are available between ICD-O revisions and between ICD-O revisions and ICD-9 and ICD-10.
Correspondence with international, multinational, national classifications
The topography classification is essentially that used by ICD-10 for malignant tumours.
Relationships – conceptual, structural and other pertinent
Originally based on the American Cancer Society's Manual of Tumor Nomenclature and Coding (MOTNAC) first published in 1951.
Relationships with other terminologies
There is an agreement between the World Health Organization and the College of American Pathologists that the ICD-O morphology classification will be used for the M-8000 to M-9989 codes in the morphology axis of SNOMED. However, frequent changes of SNOMED led to incompatibilities.
Steward/Custodian
The Secretariat / WHO
International Association of Cancer Registries
c/o International Agency for Research on Cancer
150, cours Albert Thomas 69372 Lyon Cedex 08
France
Telephone: (33) 4 72 73 85 30; Fax: (33) 4 72 73 86 96
E-mail: heanuem@iarc.fr ; jakobr at WHO
Contact information:
Dr Mary Heanue
International Agency for Research on Cancer
150, cours Albert Thomas
69372 Lyon Cedex 08
France
Telephone:(33) 4 72 73 85 30; Fax:Fax: (33) 4 72 73 86 96
E-mail: heanuem@iarc.fr
Dr Robert Jakob
World Health Organization
20 Av. Appia
1211 Geneva 27
Switzerland
E-mail: jakobr at WHO
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