ICD10CN is a local Chinese edition of International classification of diseases 10. It is notably different from other editions for including WHO classification for neoplasm morphologies (similar to ICDO3 vocabulary).
Since official release of ICD10CN does not include English translations, most displayed concept names were automatically translated in a bulk with review pending. Some concept names are taken from matching concepts belonging to other classifications (namely ICD10 and ICDO3).
All concepts retain their original Chinese names as synonyms.
All ICD10CN concepts are non-standard and most are mapped to standard Condition concepts from other SNOMED-CT and ICDO3.
Concepts in ICD10CN belong to the same domain as their mapping targets. Concept's without mapping are considered Observation.
All concepts in ICD10CN belong to one of five classes:
1. ICD10 Hierarchy, ICD10 Chapter, ICD10 SubChapter These concepts represent hierarchical levels of ICD10CN.
2. ICD10 code These concepts represent usual billable codes for diagnoses.
3. ICD10 Histology These concepts represent histology of neoplastic diseases. These numeric codes consist of 6 characters.
Even though internal hierarchy is imported as is from sources, ICD10CN concepts do not form hierarchical relationships in OMOP CDM, because they are not considered Standard.
Only external relations ICD10CN concepts have are 'Maps to' relations sourced from matching concepts in ICD10 and ICDO3 vocabularies.