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ICCC Diagnostic group table

International Classification of Childhood Cancer, 3rd edition, update 2017

ICCC-3 Diagnostic Group / Subgroup
I Leukaemias, Myeloproliferative And Myelodysplastic Diseases
Ia Lymphoid leukaemias
Ib Acute myeloid leukaemias
Ic Chronic myeloproliferative diseases
Id Myelodysplastic syndrome and other myeloproliferative diseases
Ie Unspecified and other specified leukaemias
II Lymphomas And Reticuloendothelial Neoplasms
IIa Hodgkin lymphomas
IIb Non-Hodgkin lymphomas (except Burkitt lymphoma)
IIc Burkitt lymphoma
IId Miscellaneous lymphoreticular neoplasms
IIe Unspecified lymphomas
III CNS And Miscellaneous Intracranial And Intraspinal Neoplasms
IIIa Ependymomas and choroid plexus tumour
IIIb Astrocytomas
IIIc Intracranial and intraspinal embryonal tumours
IIId Other gliomas
IIIe Other specified intracranial and intraspinal neoplasms
IIIf Unspecified intracranial and intraspinal neoplasms
IV Neuroblastoma And Other Peripheral Nervous Cell Tumours
IVa Neuroblastoma and ganglioneuroblastoma
IVb Other peripheral nervous cell tumours
V Retinoblastoma
VI Renal tumours
VIa Nephroblastoma and other non-epithelial renal tumours
VIb Renal carcinomas
VIc Unspecified malignant renal tumours
VII Hepatic tumours
VIIa Hepatoblastoma and mesenchymal tumours of liver
VIIb Hepatic carcinomas
VIIc Unspecified malignant hepatic tumours
VIII Malignant Bone tumours
VIIIa Osteosarcomas
VIIIb Chondrosarcomas
VIIIc Ewing tumour and related sarcomas of bone
VIIId Other specified malignant bone tumours
VIIIe Unspecified malignant bone tumours
IX Soft Tissue And Other Extraosseous Sarcomas
IXa Rhabdomyosarcomas
IXb Fibrosarcomas, peripheral nerve sheath tumours and other fibrous neoplasms
IXc Kaposi sarcoma
IXd Other specified soft tissue sarcomas
IXe Unspecified soft tissue sarcomas
X Germ Cell tumours, Trophoblastic tumours And Neoplasms Of Gonads
Xa Intracranial and intraspinal germ cell tumours
Xb Malignant extracranial and extragonadal germ cell tumours
Xc Malignant gonadal germ cell tumours
Xd Gonadal carcinomas
Xe Other and unspecified malignant gonadal tumours
XI Other Malignant Epithelial Neoplasms And Malignant Melanomas
XIa Adrenocortical carcinomas
XIb Thyroid carcinomas
XIc Nasopharyngeal carcinomas
XId Malignant melanomas
XIe Skin carcinomas
XIf Other and unspecified carcinomas
XII Other And Unspecified Malignant Neoplasms
XIIa Other specified malignant tumours
XIIb Other unspecified malignant tumours

1 https://iicc.iarc.fr/classification/diagnostic-groups-and-subgroups/iccc-3-2017-main-sub-groups.pdf