View source for International Classification of Diseases for Oncology

{{SI}}
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==Overview==

The '''International Classification of Diseases for Oncology''' (ICD-O) is a domain specific extension of the [[ICD|International Statistical Classification of Diseases and Related Health Problems]] for [[tumor]] diseases. This classification is widely used by [[cancer registry|cancer registries]].

It is currently in its third revision.

==Axes==

The classification has two axes:

===Morphology===
The morphology axis is for the [[morphology (biology)|morphology]] of the tumor.

This axis has additional importance, because the [[Systematized Nomenclature of Medicine]] has adopted ICD-O's classification of morphology.

====Examples of codes====
=====(8000-8009) [[Not otherwise specified]]=====
* (8000-8004) [[Neoplasms]], NOS
** ({{ICDO|8000|0}}) [[Neoplasm]], [[benign]]
** ({{ICDO|8000|1}}) [[Neoplasm]], uncertain whether [[benign]] or [[malignant]]
** ({{ICDO|8000|3}}) [[Neoplasm]], [[malignant]]
** ({{ICDO|8000|6}}) [[Neoplasm]], [[metastatic]]
** ({{ICDO|8000|9}}) [[Neoplasm]], [[malignant]], uncertain whether primary or [[metastatic]]

=====(8010-8790) [[Epithelial]] =====
* (8010-8040) [[Epithelial]] [[neoplasms]], NOS
* (8050-8080) [[Squamous cell]] [[neoplasms]]
** ({{ICDO|8070|3}}) [[Squamous cell carcinoma]], NOS
* (8090-8110) [[Basal cell]] [[neoplasms]]
** ({{ICDO|8090|3}}) [[Basal cell carcinoma]], NOS
* (8120-8130) [[Transitional cell]] [[Papillomas]] And [[Carcinomas]]
* (8140-8380) [[Adenomas]] And [[Adenocarcinomas]] ([[gland]]s)
** ({{ICDO|8140|0}}) [[Adenoma]], NOS
** ({{ICDO|8140|3}}) [[Adenocarcinoma]], NOS
** ({{ICDO|8142|3}}) [[Linitis plastica]]
** ({{ICDO|8151|0}}) [[Insulinoma]], NOS
** ({{ICDO|8152|0}}) [[Glucagonoma]], NOS
** ({{ICDO|8153|1}}) [[Gastrinoma]], NOS
** ({{ICDO|8155|3}}) [[Vipoma]]
** ({{ICDO|8160|3}}) [[Cholangiocarcinoma]]
** ({{ICDO|8170|3}}) [[Hepatocellular carcinoma]], NOS
** ({{ICDO|8200|3}}) [[Adenoid cystic carcinoma]]
** ({{ICDO|8240|1}}) [[Carcinoid]] tumor, NOS, of [[appendix]]
** ({{ICDO|8271|0}}) [[Prolactinoma]]
** ({{ICDO|8290|0}}) [[Oncocytoma]]
** ({{ICDO|8290|0}}) [[Hurthle cell adenoma]]
** ({{ICDO|8312|3}}) [[Renal cell carcinoma]]
** ({{ICDO|8312|3}}) [[Grawitz tumor]]
** ({{ICDO|8360|1}}) [[Multiple endocrine adenomas]]
** ({{ICDO|8380|0}}) [[Endometrioid adenoma]], NOS
* (8390-8420) [[Adnexal]] And [[Skin appendage]] [[Neoplasms]]
* (8430-8439) [[Mucoepidermoid]] [[Neoplasms]]
* (8440-8490) [[Cystic]], [[Mucinous]] And [[Serous]] [[Neoplasms]]
** ({{ICDO|8440|0}}) [[Cystadenoma]], NOS
** ({{ICDO|8480|6}}) [[Pseudomyxoma peritonei]]
* (8500-8540) Ductal, [[Lobular]] And [[Medullary]] [[Neoplasms]]
* (8550-8559) [[Acinar cell]] [[neoplasms]]
* (8560-8580) [[Complex epithelial]] [[neoplasms]]
** ({{ICDO|8561|0}}) [[Warthin's tumor]]
** ({{ICDO|8580|0}}) [[Thymoma]], NOS
* (8590-8670) Specialized [[gonadal]] [[neoplasms]]
** ({{ICDO|8590|1}}) [[Sex cord-stromal tumor]]
** ({{ICDO|8600|0}}) [[Thecoma]], NOS
** ({{ICDO|8620|1}}) [[Granulosa cell tumor]], NOS
** ({{ICDO|8630|1}}) [[Arrhenoblastoma]], NOS
** ({{ICDO|8631|0}}) [[Sertoli-Leydig cell tumor]]
* (8680-8710) [[Paragangliomas]] And [[Glomus tumor]]s
** ({{ICDO|8680|1}}) [[Paraganglioma]], NOS
** ({{ICDO|8700|0}}) [[Pheochromocytoma]], NOS
** ({{ICDO|8711|0}}) [[Glomus tumor]]
* (8720-8790) [[Nevi]] And [[Melanomas]]
** ({{ICDO|8720|0}}) [[Melanocytic nevus]]
** ({{ICDO|8720|3}}) [[Malignant melanoma]], NOS
** ({{ICDO|8720|3}}) [[Melanoma]], NOS
** ({{ICDO|8721|3}}) [[Nodular melanoma]]
** ({{ICDO|8727|0}}) [[Dysplastic nevus]]
** ({{ICDO|8742|3}}) [[Lentigo maligna melanoma]]
** ({{ICDO|8743|3}}) [[Superficial spreading melanoma]]
** ({{ICDO|8744|3}}) [[Acral lentiginous melanoma]], malignant

=====(8800-9370) [[Connective tissue]]=====
* (8800-8809) [[Soft tissue]] [[Tumors]] And [[Sarcomas]], Nos
** ({{ICDO|8800|3}}) [[Sarcoma]], NOS
** ({{ICDO|8800|3}}) [[Soft tissue sarcoma]]
** ({{ICDO|8806|3}}) [[Desmoplastic small round cell tumor]]

* (8810-8830) [[Fibromatous]] [[neoplasms]]
** ({{ICDO|8810|0}}) [[Fibroma]], NOS
** ({{ICDO|8810|3}}) [[Fibrosarcoma]], NOS

* (8840-8849) [[Myxomatous]] [[neoplasms]]
** ({{ICDO|8840|0}}) [[Myxoma]], NOS

* (8850-8880) [[Lipomatous]] [[neoplasms]]
** ({{ICDO|8850|0}}) [[Lipoma]], NOS
** ({{ICDO|8850|3}}) [[Liposarcoma]], NOS

* (8890-8920) [[Myomatous]] [[neoplasms]]
** ({{ICDO|8890|0}}) [[Leiomyoma]], NOS
** ({{ICDO|8890|3}}) [[Leiomyosarcoma]], NOS
** ({{ICDO|8895|0}}) [[Myoma]]
** ({{ICDO|8895|3}}) [[Myosarcoma]]
** ({{ICDO|8900|0}}) [[Rhabdomyoma]], NOS
** ({{ICDO|8900|3}}) [[Rhabdomyosarcoma]], NOS

* (8930-8990) Complex Mixed And [[Stromal]] [[Neoplasms]]
** ({{ICDO|8940|0}}) [[Pleomorphic adenoma]]
** ({{ICDO|8960|3}}) [[Nephroblastoma]], NOS ([[Wilms's tumor]])

* (9000-9030) [[Fibroepithelial]] [[Neoplasms]]
** ({{ICDO|9000|0}}) [[Brenner tumor]], NOS

* (9040-9049) [[Synovial]]-Like [[Neoplasms]]
** ({{ICDO|9040|3}}) [[Synovial sarcoma]], NOS

* (9050-9059) [[Mesothelial]] [[Neoplasms]]
** ({{ICDO|9050|0}}) [[Mesothelioma]], benign
** ({{ICDO|9050|3}}) [[Mesothelioma]], NOS

* (9060-9090) [[Germ cell tumour|Germ cell Neoplasms]]
** ({{ICDO|9060|3}}) [[Dysgerminoma]]
** ({{ICDO|9064|3}}) [[Germ cell tumor]], NOS
** ({{ICDO|9070|3}}) [[Embryonal carcinoma]], NOS
** ({{ICDO|9071|3}}) [[Yolk sac tumor]]
** ({{ICDO|9080|0}}) [[Teratoma]], benign
** ({{ICDO|9080|3}}) [[Teratoma]], malignant, NOS
** ({{ICDO|9084|0}}) [[Dermoid cyst]], NOS

* (9100-9109) [[Trophoblastic]] [[neoplasms]]
** ({{ICDO|9100|3}}) [[Choriocarcinoma]], NOS

* (9110-9119) [[Mesonephromas]]
* (9120-9160) [[Blood vessel]] [[tumors]]
** ({{ICDO|9120|0}}) [[Hemangioma]], NOS
** ({{ICDO|9120|0}}) [[Angioma]], NOS
** ({{ICDO|9120|3}}) [[Hemangiosarcoma]]
** ({{ICDO|9120|3}}) [[Angiosarcoma]]
** ({{ICDO|9130|0}}) [[Hemangioendothelioma]], benign
** ({{ICDO|9130|1}}) [[Hemangioendothelioma]], NOS
** ({{ICDO|9140|3}}) [[Kaposi's sarcoma]]
** ({{ICDO|9150|0}}) [[Hemangiopericytoma]], benign
** ({{ICDO|9150|1}}) [[Hemangiopericytoma]], NOS

* (9170-9179) [[Lymphatic vessel]] [[tumors]]
** ({{ICDO|9170|0}}) [[Lymphangioma]], NOS
** ({{ICDO|9173|0}}) [[Cystic lymphangioma]]

* (9180-9240) [[Osseous]] And [[Chondromatous]] [[neoplasms]]
** ({{ICDO|9180|0}}) [[Osteoma]], NOS
** ({{ICDO|9180|3}}) [[Osteosarcoma]], NOS
** ({{ICDO|9210|0}}) [[Osteochondroma]]
** ({{ICDO|9210|0}}) [[Cartilaginous]] [[exostosis]]
** ({{ICDO|9220|0}}) [[Chondroma]], NOS
** ({{ICDO|9220|3}}) [[Chondrosarcoma]], NOS

* (9250-9259) [[Giant cell]] [[tumors]]
* (9260-9269) Miscellaneous [[bone tumors]]
** ({{ICDO|9260|3}}) [[Ewing's sarcoma]]

* (9270-9340) [[Odontogenic]] [[tumors]]
** ({{ICDO|9273|0}}) [[Cementoblastoma]], benign
** ({{ICDO|9310|0}}) [[Ameloblastoma]], NOS

* (9350-9370) Miscellaneous [[tumors]]
** ({{ICDO|9350|1}}) [[Craniopharyngioma]]

=====(9380-9589) [[Nervous system]]=====
* (9380-9480) [[Gliomas]]
** ({{ICDO|9382|3}}) Mixed [[oligoastrocytoma]]
** ({{ICDO|9391|3}}) [[Ependymoma]], NOS
** ({{ICDO|9400|3}}) [[Astrocytoma]], NOS
*** (9421/3) [[Pilocytic astrocytoma]]
*** (9440/3) [[Glioblastoma multiforme]]
** ({{ICDO|9450|3}}) [[Oligodendroglioma]], NOS

* (9490-9520) [[Neuroepitheliomatous]] [[neoplasms]]
** ({{ICDO|9500|3}}) [[Neuroblastoma]], NOS
** ({{ICDO|9510|3}}) [[Retinoblastoma]]

* (9530-9539) [[Meningiomas]]

* (9540-9570) [[Nerve sheath]] [[tumors]]
** ({{ICDO|9540|0}}) [[Neurofibroma]], NOS
** ({{ICDO|9540|1}}) [[Neurofibromatosis]], NOS
** ({{ICDO|9560|0}}) [[Schwannoma]], NOS
** ({{ICDO|9560|0}}) [[Neurinoma]]
** ({{ICDO|9560|0}}) [[Acoustic neuroma]]
** ({{ICDO|9570|0}}) [[Neuroma]], NOS

* (9580-9589) [[Granular cell]] [[tumors]] and [[Alveolar]] [[soft part]] [[sarcoma]]

=====(9590-9999) Hematologic ([[Leukemia]]s, [[Lymphoma]]s and related disorders)=====
* (9590-9599) [[Malignant lymphoma]], NOS, Or [[diffuse]]
** ({{ICDO|9590|3}}) [[Lymphoma]], NOS
** ({{ICDO|9591|3}}) [[Non-Hodgkin's lymphoma]], NOS
** ({{ICDO|9592|3}}) [[Lymphosarcoma]], NOS

* (9650-9660) [[Hodgkin's disease]]
** ({{ICDO|9650|3}}) [[Hodgkin's disease]], NOS
** ({{ICDO|9651|3}}) [[Lymphocyte-rich classical Hodgkin lymphoma]]
** ({{ICDO|9652|3}}) [[Mixed cellularity classical Hodgkin lymphoma]]
** ({{ICDO|9653|3}}) [[Lymphocyte-depleted classical Hodgkin lymphoma]]
** ({{ICDO|9659|3}}) [[Nodular lymphocyte predominant Hodgkin lymphoma]]
** ({{ICDO|9663|3}}) [[Nodular sclerosis classical Hodgkin lymphoma]]

* (9670-9680) [[Malignant lymphoma]] Specified Type, [[Diffuse]] Or Nos
** ({{ICDO|9670|3}}) [[Small lymphocytic lymphoma]]
** ({{ICDO|9671|3}}) [[Lymphoplasmacytic lymphoma]]
** ({{ICDO|9673|3}}) [[Mantle cell lymphoma]]
** ({{ICDO|9678|3}}) [[Primary effusion lymphoma]]
** ({{ICDO|9679|3}}) [[Mediastinal (thymic) large cell lymphoma]]
** ({{ICDO|9680|3}}) [[Diffuse large B-cell lymphoma]] or [[Intravascular large B-cell lymphoma]]
** ({{ICDO|9687|3}}) [[Burkitt lymphoma]]
** ({{ICDO|9689|3}}) [[Splenic marginal zone lymphoma]]

* (9690-9699) [[Malignant lymphoma]], [[follicular lymphoma|Follicular]] Or [[Nodular]], With Or Without [[diffuse areas]]
** ({{ICDO|9690|3}}) [[Follicular lymphoma]]
** ({{ICDO|9698|3}}) [[Follicular lymphoma]]
** ({{ICDO|9699|3}}) [[Extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue]] ([[MALT-lymphoma]])
** ({{ICDO|9699|3}}) [[Nodal marginal zone B-cell lymphoma]]

* (9700-9709) Specified [[Cutaneous]] and Peripheral [[T-Cell]] [[Lymphomas]]
** ({{ICDO|9700|3}}) [[Mycosis fungoides]]
** ({{ICDO|9701|3}}) [[Sezary syndrome]]
** ({{ICDO|9702|3}}) [[Peripheral T-cell lymphoma]], unspecified
** ({{ICDO|9705|3}}) [[Angioimmunoblastic T-cell lymphoma]]
** ({{ICDO|9708|3}}) [[Subcutaneous panniculitis-like T-cell lymphoma]]

* (9710-9719) Other Specified [[Non-Hodgkin's lymphomas]]
** ({{ICDO|9714|3}}) [[Anaplastic large cell lymphoma]]
** ({{ICDO|9716|3}}) [[Hepatosplenic T-cell lymphoma]]
** ({{ICDO|9717|3}}) [[Enteropathy type T-cell lymphoma]]
** ({{ICDO|9718|1}}) [[Lymphomatoid papulosis]]
** ({{ICDO|9718|3}}) [[Primary cutaneous anaplastic large cell lymphoma]]
** ({{ICDO|9719|3}}) [[Extranodal NK/T cell lymphoma, nasal type]]

* (9720-9729) Other [[Lymphoreticular]] [[neoplasms]]
** ({{ICDO|9727|3}}) [[Blastic NK cell lymphoma]]
** ({{ICDO|9728|3}}) [[Lymphoma]]
** ({{ICDO|9729|3}}) [[Lymphoma]]

* (9730-9739) [[Plasma cell]] [[tumors]]
** ({{ICDO|9731|3}}) [[Plasmacytoma]], NOS or [[Extramedullary plasmacytoma]] or [[Solitary plasmacytoma of bone]]
** ({{ICDO|9732|3}}) [[Multiple myeloma]] or [[Plasma cell myeloma]]
** ({{ICDO|9734|3}}) [[Extraosseous plasmacytoma]]

* (9740-9749) [[Mast cell]] [[Tumors]]
** ({{ICDO|9740|1}}) [[Mastocytoma]], NOS or [[Extracutaneous mastocytoma]]
** ({{ICDO|9740|3}}) [[Mast cell sarcoma]]
** ({{ICDO|9741|1}}) Malignant [[mastocytosis]] or [[Indolent systemic mastocytosis]]
** ({{ICDO|9741|3}}) [[Aggressive systemic mastocytosis]] or [[Systemic mastocytosis]] with [[associated clonal, hematological non-mast cell lineage disease]]
** ({{ICDO|9742|3}}) [[Mast cell leukemia]]
** ({{ICDO|9751|1}}) [[Langerhans cell histiocytosis]]
** ({{ICDO|9755|3}}) [[Histiocytic sarcoma]]
** ({{ICDO|9756|3}}) [[Langerhans cell sarcoma]]
** ({{ICDO|9757|3}}) [[Dendritic cell sarcoma]], NOS or [[Interdigitating dendritic cell sarcoma]]/tumor
** ({{ICDO|9758|3}}) [[Follicular dendritic cell sarcoma]]/tumor

* (9760-9769) [[Immunoproliferative diseases]]
** ({{ICDO|9761|3}}) [[Waldenstrom macroglobulinemia]]
** ({{ICDO|9766|1}}) [[Lymphomatoid granulomatosis]]

=====-- [[Lymphoid]] leukemias, and related conditions=====
* (9800-9809) [[Leukemias]], NOS
** ({{ICDO|9800|3}}) [[Leukemia]], NOS
** ({{ICDO|9805|3}}) [[Acute leukemia of ambiguous lineage]]
** ({{ICDO|9801|3}}) [[Acute leukemia]], NOS

* (9820-9829) [[Lymphoid leukemias]]
** ({{ICDO|9820|3}}) [[Lymphocytic leukemia]], NOS
** ({{ICDO|9820|3}}) [[Lymphatic leukemia]], NOS
** ({{ICDO|9821|3}}) [[Acute lymphoblastic leukemia]], NOS
** ({{ICDO|9821|3}}) [[Acute lymphocytic leukemia]]
** ({{ICDO|9823|3}}) [[Chronic lymphocytic leukemia]]
** ({{ICDO|9826|3}}) [[Leukemia]]
** ({{ICDO|9827|3}}) [[Adult T-cell leukemia/lymphoma]]

* (9830-9839) [[Plasma cell]] [[leukemia]]
** ({{ICDO|9831|3}}) [[T-cell large granular lymphocytic leukemia]]
** ({{ICDO|9833|3}}) [[B-cell prolymphocytic leukemia]]
** ({{ICDO|9834|3}}) [[T-cell prolymphocytic leukemia]]
** ({{ICDO|9835|3}}) [[Precursor B lymphoblastic leukemia]]
** ({{ICDO|9837|3}}) [[Precursor T lymphoblastic leukemia]]

=====-- [[Myeloid]] leukemias, and related conditions=====
* (9840-9849) [[Erythroleukemias]] ([[Acute myelogenous leukemia#French-American-British .28FAB.29 classification|FAB-M6]])
** ({{ICDO|9840|3}}) [[Acute erythroid leukemia]]

* (9850-9859) [[Lymphosarcoma]] cell [[leukemia]]

* (9860-9869) [[Myeloid (Granulocytic) Leukemias]]
** ({{ICDO|9860|3}}) [[Myeloid leukemia]], NOS
** ({{ICDO|9860|3}}) [[Myelogenous leukemia]], NOS
** ({{ICDO|9861|3}}) [[Acute myelogenous leukemia]] ([[Acute myelogenous leukemia#French-American-British .28FAB.29 classification|FAB-M1,M2]])
** ({{ICDO|9863|3}}) [[Chronic myelogenous leukemia]]
** ({{ICDO|9866|3}}) [[Acute promyelocytic leukemia]]  ([[Acute myelogenous leukemia#French-American-British .28FAB.29 classification|FAB-M3]])
** ({{ICDO|9866|3}}) [[Acute promyelocytic leukemia (AML with t(15;17)(q22;q12), PML-RARa and variants)]]
** ({{ICDO|9867|3}}) [[Acute (medical)|Acute]] [[myelomonocytic]] [[leukemia]] ([[Acute myelogenous leukemia#French-American-British .28FAB.29 classification|FAB-M4]])

* (9870-9889) [[Basophilic]] [[leukemia]] and [[Eosinophilic]] [[leukemia]]
** ({{ICDO|9870|3}}) [[Basophilic]] [[leukemia]] or [[Acute basophilic leukemia]]
** ({{ICDO|9871|3}}) [[AML with inv(16)(p13q22) or t(16;16)(p13;q22), CBFb/MYH11]] (FAB M4Eo)
** ({{ICDO|9872|3}}) [[Acute myeloid leukemia]], minimally [[differentiated]] (FAB type M0)
** ({{ICDO|9873|3}}) [[Acute myeloid leukemia]], without maturation (FAB type M1)
** ({{ICDO|9874|3}}) [[Acute myeloid leukemia]], with maturation (FAB M2)
** ({{ICDO|9875|3}}) [[Chronic myelogenous leukemia]]
** ({{ICDO|9876|3}}) [[Atypical chronic myelogenous leukemia]]
** ({{ICDO|9880|3}}) [[Eosinophilic]] [[leukemia]]

* (9890-9899) [[Monocytic leukemias]]
** ({{ICDO|9890|3}}) [[Monocytic leukemia]], NOS ([[Acute myelogenous leukemia#French-American-British .28FAB.29 classification|FAB-M5]])
** ({{ICDO|9891|3}}) [[Acute monoblastic and monocytic leukemia]] (FAB M5)
** ({{ICDO|9895|3}}) [[Acute myeloid leukemia multilineage dysplasia]]
** ({{ICDO|9896|3}}) [[AML with t(8;21)(q22;q22), AML1/ETO]]
** ({{ICDO|9897|3}}) [[AML with 11q23 (MLL) abnormalities]]

* (9900-9948) Other [[Leukemias]]
** ({{ICDO|9910|3}}) [[Acute megakaryoblastic leukemia]] ([[Acute myelogenous leukemia#French-American-British .28FAB.29 classification|FAB-M7]])
** ({{ICDO|9920|3}}) [[Acute myeloid leukemia and myelodysplastic syndrome, therapy related]]
** ({{ICDO|9930|3}}) [[Chloroma]] or [[Myeloid sarcoma]]
** ({{ICDO|9931|3}}) [[Acute panmyelosis with myelofibrosis]]
** ({{ICDO|9940|3}}) [[Hairy cell leukemia]]
** ({{ICDO|9946|3}}) [[Juvenile myelomonocytic leukemia]]
** ({{ICDO|9948|3}}) [[Aggressive NK cell leukemia]]

=====-- Other=====
* (9950-9970) Miscellaneous [[Myeloproliferative]] And [[Lymphoproliferative disorders]]
** ({{ICDO|9950|3}}) [[Polycythemia vera]]
** ({{ICDO|9960|1}}) [[Myeloproliferative disease]], NOS
** ({{ICDO|9961|3}}) Chronic idiopathic [[myelofibrosis]]
** ({{ICDO|9962|3}}) [[Essential thrombocytemia]]
** ({{ICDO|9963|3}}) [[Chronic neutrophilic leukemia]]
** ({{ICDO|9964|3}}) [[Chronic eosinophilic leukemia]] / [[hypereosinophilic syndrome]]
** ({{ICDO|9970|1}}) [[Post-transplant lymphoproliferative disorder, pleomorphic]]
** ({{ICDO|9975|3}}) [[Chronic Myeloproliferative disease, unclassifiable]]
** ({{ICDO|9975|3}}) [[Myelodysplastic / myeloproliferative diseases, unclassifiable]]

* (9980-9989) [[Myelodysplastic syndrome]]
** ({{ICDO|9980|3}}) [[Chronic myelomonocytic leukemia]] or [[Refractory anemia]]
** ({{ICDO|9982|3}}) [[Refractory anemia with ringed sideroblasts]]
** ({{ICDO|9983|3}}) [[Refractory anemia with excess blasts]]
** ({{ICDO|9985|3}}) [[Refractory cytopenia with multilineage dysplasia]]
** ({{ICDO|9986|3}}) [[Myelodysplastic syndrome associated with isolated del(5q) chromosome abnormality]]
** ({{ICDO|9989|3}}) [[Myelodysplastic syndrome]], NOS

===Topography===
The topography axis is for the [[topographical codes]] of the tumor's site. It is standardized with the C section of [[ICD|ICD-10]]

There were no changes in the topography axis between ICD-O-2 and ICD-O-3.

See [[List of ICD-10 codes#.28C00-C97.29 Malignant Neoplasms]] for examples.

==See also==
* [[Medical classification]]

==External links==
* [http://www.who.int/classifications/icd/adaptations/oncology/en/  Official page] at [[World Health Organization]]
* [http://training.seer.cancer.gov/index.html Tutorial] at [[National Cancer Institute]]
* [http://www.dimdi.de/static/en/klassi/diagnosen/icdo3/basisicdo3.htm Overview] at [[DIMDI]]
* [http://www.healthyarkansas.com/arkcancer/publications/Multiple%20Primaries.ppt Overview of multiple primaries] at healthyarkansas.com (PPT)
* [http://training.seer.cancer.gov/module_coding_primary/unit01_hist_bkgrnd01.html History of versions] at [[National Cancer Institute]]

===Morphology===
* [http://seer.cancer.gov/icd-o-3/ Cancer.gov - overview], includes link to [http://seer.cancer.gov/icd-o-3/sitetype.d06212004.xls Excel spreadsheet with codes] at [[National Cancer Institute]]
* [http://training.seer.cancer.gov/module_coding_primary/table_who_class_hemo_1.html Overview] at [[National Cancer Institute]]
* [http://training.seer.cancer.gov/module_icdo3/downloadables/Supplemental%20ICD-O-3%20List.DOC Word document - malignancies only] at [[National Cancer Institute]]
* [http://uniklinikum-giessen.de/imi/konvi2t2.html?m=27 Overview] at [[University hospital Gießen und Marburg]]
* [http://www.dimdi.de/static/en/klassi/diagnosen/icdo3/ Download table] at [[DIMDI]]
* [http://www-p53.iarc.fr/Morphology.html Codes] at [[International Agency for Research on Cancer|IARC]]
* [http://www.wolfbane.com/icd/index.html 1st, 2nd, and 3rd editions] at wolfbane.com
* [http://www.ncri.ie/data.cgi/html/icdo2morphs.shtml List] at The National Cancer Registry Ireland
* [http://www.celsius.lshtm.ac.uk/dataDict/appendices/MorphologyofNeoplasmsICDO2.html List] at [[London School of Hygiene & Tropical Medicine]]

{{Epithelial neoplasms}}
{{Soft tissue tumors and sarcomas}}
{{Nervous tissue tumors}}
{{Hematological malignancy histology}}

[[Category:Medical manuals]]
[[Category:diagnosis classification]]
[[Category:Classification systems]]

[[de:International Classification of Diseases for Oncology]]
[[es:CIE-O]]
[[fr:Classification internationale des maladies oncologiques]]
[[nl:International Classification of Diseases for Oncology]]
[[pt:Classificação Internacional de Doenças para Oncologia]]
[[tr:Onkolojik Hastalıkların Uluslararası Sınıflandırılması]]
[[ur:بین الاقوامی جماعت بندی امراض براۓ علم الاورام]]

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{{WS}}
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