摘要
The World Health Organisation(WHO)classifies clinical diagnoses with the International Statistical Classification of Disease and Related Health Problems(ICD).There have been various iterations of ICD since it is inception.For oncology,ICD-O was introduced in 1976 as a special adaption of ICD for cancers to facilitate greater coding detail of the topography,which describes the anatomical location of the tumour origin,and the morphology concerns the histology of a neoplasm.ICD-10 began in 1983 and was first used in 1994.At the same time,a code for cholangiocarcinoma(CCA)was also introduced(https://icd.who.int/browse10/2010/en).
