The table below provides the definition for this International Classification of Childhood Cancer (ICCC) variable. To see other variable definitions, see the ICCC home page.

Site Group ICD-O-2 Histology (Type) ICD-O-2 Site Recode
I. Leukemia
(a) Lymphoid Leukemia
Acute lymphocytic leukemia (ALL) 9821, 9828 C000-C809 012
Lymphoid excluding ALL 9820, 9822-9827, 9850 C000-C809 011
(b) Acute non-lymphocytic leukemia 9840, 9841, 9861, 9864, 9866, 9867, 9871-9874, 9891, 9894, 9910 C000-C809 013
(c) Chronic myeloid leukemia 9863, 9868 C000-C809 015
(d) Other specified leukemia 9830, 9842, 9860, 9862, 9870,9875-9890, 9892, 9893, 9900, 9930-9941 C000-C809 016
(e) Unspecified leukemia 9800-9804 C000-C809 017
II. Lymphoma and reticuloendothelial neoplasms
(a) Hodgkin lymphoma 9650-9667 C000-C809 021
(b) Non-Hodgkin lymphoma 9591-9595, 9670-9686, 9688, 9690-9717, 9723 C000-C809 022
(c) Burkitt lymphoma 9687 C000-C809 023
(d) Miscellaneous lymphoreticular neoplasms 9720, 9731-9764 C000-C809 024
(e) Unspecified lymphoma 9590 C000-C809 025
III. CNS and miscellaneous intracranial and intraspinal neoplasms
(a) Ependymoma 9383, 9390-9394 C000-C809 031
(b) Astrocytoma 9380 C723 032
9381, 9400-9441 * C700-C729, C751-C753, C692 * 032
(c) Primitive neuroectodermal tumors 9470-9473 * C700-C729, C751-C753, C809 * 033
9500 * C710-C719, C751-C753 * 033
9362 * C000-C809 * 033
(d) Other gliomas 9380 C700-C722, C724-C729 034
9382, 9384 C000-C809 034
9442-9460, 9481 C000-C809 034
(e) Miscellaneous intracranial and intraspinal neoplasms 8270-8281, 8300, 9350-9361, 9480, 9505, 9530-9539 * C000-C809 * 035
(f) Unspecified intracranial and intraspinal neoplasms 8000-8004 C700-C729, C751-C753 036
IV. Sympathetic nervous system tumors
(a) Neuroblastoma and ganglioneuroblastoma 9490 C000-C809 041
9500 * C000-C709,C720-C750,C754-C809 * 041
(b) Other sympathetic nervous system tumors 8680, 8693-8710, 9501-9504, 9520-9523 C000-C809 042
V. Retinoblastoma 9510-9512 C000-C809 051
VI. Renal tumors
(a) Wilms tumor, rhabdoid and clear cell sarcoma 8963 C649, C809 061
8960, 8964 C000-C809 061
(b) Renal carcinoma 8010-8041, 8050-8075, 8082, 8120-8122, 8130-8141, 8143, 8155, 8190-8201, 8210, 8211, 8221-8231,8240, 8241, 8244-8246, 8260-8263, 8290, 8310, 8320, 8323, 8401, 8430, 8440, 8480-8490, 8504, 8510, 8550, 8560-8573 C649 062
8312 C000-C809 062
(c) Unspecified malignant renal tumors 8000-8004 C649 063
VII. Hepatic tumors
(a) Hepatoblastoma 8970 C000-C809 071
(b) Hepatic carcinoma 8010-8041, 8050-8075, 8082, 8120-8122, 8140, 8141, 8143, 8155, 8190-8201, 8210, 8211, 8230, 8231,8240, 8241, 8244-8246, 8260-8263, 8310, 8320, 8323, 8401, 8430, 8440, 8480-8490, 8504, 8510, 8550, 8560-8573 C220, C221 072
8160-8180 C000-C809 072
(c) Unspecified malignant hepatic tumors 8000-8004 C220, C221 073
VIII. Malignant bone tumors
(a) Osteosarcoma 9180-9200 C000-C809 081
(b) Chrondosarcoma 9220-9230 C000-C809 082
9231, 9240 C400-C419 082
(c) Ewing sarcoma 9260 C400-C419, C809 083
9363, 9364 C400-C419 083
9473 * C400-C419 * 083
(d) Other specified malignant bone tumors 8812, 9250, 9261-9330, 9370 C000-C809 085 $
(e) Unspecified malignant bone tumors 8000-8004, 8800, 8801, 8803, 8804 C400-C419 086 $
IX. Soft-tissue sarcomas
(a) Rhabdomyosarcoma and embryonal sarcoma 8900-8920, 8991 C000-C809 091
(b) Fibrosarcoma, neurofibrosarcoma and other fibromatous neoplasms 8810, 8811, 8813-8833, 9540-9561 C000-C809 092
(c) Kaposi sarcoma 9140 C000-C809 093
(d) Other specified soft-tissue sarcomas
IX(d) excluding misclassification from III(c) 8840-8896, 8982, 8990, 9040-9044, 9120-9134, 9150-9170, 9251, 9581 C000-C809 094
8963 C000-C639, C659-C768 094
9231, 9240, 9363, 9364 C000-C399, C440-C809 094
9260 C000-C399, C470-C768 094
PNET - not in brain/CNS/bone 9473 * C000-C399,C420-C699, C730-C750,C754-C808 * 084
(e) Unspecified soft-tissue sarcomas 8800-8804 C000-C399, C440-C809 095
X. Germ-cell, trophoblastic and other gonadal neoplasms
(a) Intracranial and intraspinal germ-cell tumors 9060-9102 C700-C729, C751-C753 101
(b) Other and unspecified non-gonadal germ-cell tumors 9060-9102 C000-C559, C570-C619, C630-C699, C739-C750, C754-C809 102
(c) Gonadal germ-cell tumors 9060-9102 C569, C620-C629 103
(d) Gonadal carcinomas 8010-8041, 8050-8075, 8120-8122, 8130-8141, 8143, 8155, 8190-8201, 8210, 8211, 8221-8241, 8244-8246, 8260-8263, 8290, 8310, 8320, 8323, 8430, 8440, 8480-8490, 8504, 8510, 8550, 8560-8573 C569, C620-C629 104
8380, 8381, 8441-8473 C000-C809 104
(e) Other and unspecified malignant gonadal tumors 8590-8670, 9000 C000-C809 105
8000-8004 C569, C620-C629 105
XI. Carcinomas and other malignant epithelial neoplasms
(a) Adrenocortical carcinoma 8370-8375 C000-C809 111
(b) Thyroid carcinoma 8010-8041, 8050-8075, 8082, 8120-8122, 8130-8141, 8155, 8190, 8200, 8201, 8211, 8230, 8231, 8244-8246, 8260-8263, 8290, 8310, 8320, 8323, 8430, 8440, 8480, 8481, 8500-8573 C739 112
8330-8350 C000-C809 112
(c) Nasopharyngeal carcinoma 8010-8041, 8050-8075, 8082, 8120-8122, 8130-8141, 8155, 8190, 8200, 8201, 8211, 8230, 8231, 8244-8246, 8260-8263, 8290, 8310, 8320, 8323, 8430, 8440, 8480, 8481, 8504, 8510, 8550, 8560-8573 C110-C119 113
(d) Malignant melanoma 8720-8780 C000-C809 114
(e) Skin carcinoma 8010-8041, 8050-8075, 8082, 8090-8110, 8140, 8143, 8147, 8190, 8200, 8240, 8246, 8247, 8260, 8310, 8320, 8323, 8390-8420, 8430, 8480, 8542, 8560, 8570-8573, 8940 C440-C449 115
(f) Other and unspecified carcinomas 8010-8082, 8120-8155, 8190-8263, 8290, 8310, 8314-8323, 8430-8440, 8480-8580, 8940, 8941 C000-C109, C129-C218, C239-C399, C480-C488, C500-C559, C570-C619, C630-C639, C659-C729, C750-C809 116
XII. Other and unspecified malignant neoplasms
(a) Other specified malignant tumors 8930, 8933, 8950, 8951, 8971-8981, 9020, 9050-9053, 9110, 9580 C000-C809 121
(b) Other unspecified malignant tumors 8000-8004 C000-C218, C239-C399, C420-C559, C570-C619, C630-C639, C659-C699, C739-C750, C754-C809 122
Not classified by SEER     999

*ICD-O-2 histology and site definitions differ between IARC Technical Report No. 29 and the SEER modification.

$Recode value differs between IARC Technical Report No. 29 and the SEER modification.