ICD-10 is an international code system for diagnoses, published by the World Health Organization. It is used worldwide, but most nations have implemented their own modification of the original ICD-10 system. We support both the version published by WHO and the modifications of each country.Documentation Index
Fetch the complete documentation index at: https://docs.corti.ai/llms.txt
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Overview
- Around 11,000 assignable codes in the version published by WHO.
- Most countries publish national modifications of ICD-10. Some modifications, such as the British, have a large overlap with the international version. Other countries, such as the US, have little overlap.
- Only conditions that affect patient care should be coded.
- The rules for ICD-10 coding are different for inpatient and outpatient settings. In outpatient, only established diagnoses should be coded, while in inpatient, uncertain and ruled-out conditions should be coded. We, therefore, require the user to specify the setting.
National extensions
Many countries publish national adaptations of ICD-10 that add country-specific codes or additional granularity beyond the international edition. National extensions are supported as separate coding system identifiers:
When enabled, the
system field accepts the relevant ICD-10 identifier with an encounter-type suffix (e.g., icd10int-inpatient, icd10gm-inpatient, cim10fr-outpatient).