This case-sensitive code system http://fhir.ch/ig/ch-crl/CodeSystem/nkrs-iccc3code defines the following codes:

Code	Display
Ia	Lymphoid leukaemias
Ib	Acute myeloid leukemias
Ic	Chronic myeloproliferative diseases
Id	Myelodysplastic syndrome and other myeloproliferative diseases
Ie	Unspecified and other specified leukemias
IIa	Hodgkin lymphomas
IIb	Non-Hodgkin lymphomas (except Burkitt lymphoma)
IIc	Burkitt lymphoma
IId	Miscellaneous lymphoreticular neoplasms
IIe	Unspecified lymphomas
IIIa	Ependymomas and choroid plexus tumor
IIIb	Astrocytomas
IIIc	Intracranial and intraspinal embryonal tumors
IIId	Other gliomas
IIIe	Other specified intracranial and intraspinal neoplasms
IIIf	Unspecified intracranial and intraspinal neoplasms
IVa	Neuroblastoma and ganglioneuroblastoma
IVb	Other peripheral nervous cell tumors
V	Retinoblastoma
VIa	Nephroblastoma and other nonepithelial renal tumors
VIb	Renal carcinomas
VIc	Unspecified malignant renal tumors
VIIa	Hepatoblastoma
VIIb	Hepatic carcinomas
VIIc	Unspecified malignant hepatic tumors
VIIIa	Osteosarcomas
VIIIb	Chondrosarcomas
VIIIc	Ewing tumor and related sarcomas of bone
VIIId	Other specified malignant bone tumors
VIIIe	Unspecified malignant bone tumors
IXa	Rhabdomyosarcomas
IXb	Fibrosarcomas, peripheral nerve sheath tumors, and other fibrous neoplasms
IXc	Kaposi sarcoma
IXd	Other specified soft tissue sarcomas
IXe	Unspecified soft tissue sarcomas
Xa	Intracranial and intraspinal germ cell tumors
Xb	Malignant extracranial and extragonadal germ cell tumors
Xc	Malignant gonadal germ cell tumors
Xd	Gonadal carcinomas
Xe	Other and unspecified malignant gonadal tumors
XIa	Adrenocortical carcinomas
XIb	Thyroid carcinomas
XIc	Nasopharyngeal carcinomas
XId	Malignant melanomas
XIe	Skin carcinomas
XIf	Other and unspecified carcinomas
XIIa	Other specified malignant tumors
XIIb	Other unspecified malignant tumours
140	Langerhans cell histiocytosis
150	Neoplasms of uncertain behaviour or in situ