opened
MaximMoinat
username_0
Original issue: https://github.com/OHDSI/CommonDataModel/issues/271

Although ICD is not a standard concept, addition of the hierarchy would be useful for classification of conditions. However, as mentioned in the referenced issue, the higher level ICD chapters (I to XXII) and sections (e.g. 'A00-A09') are missing in the OMOP vocabulary. All chapters for ICD10 can be found in [this ICD browser from the WHO](https://icd.who.int/browse10/2016/en).

Would this be a welcome addition to the vocabularies?

Additional consideration; make ICD10 'official' classification concepts for conditions. Currently these are MedDRA terms, but it is not available at every data site because it requires a licence.
Missing ICD9/ICD10 hierarchical concepts and associated relationships
issue