ICD-10 / CIM-10 — International Classification of Diseases, 10th Revision
Overview
ICD-10 is the WHO standard classification of diseases, health conditions, and causes of death, used worldwide for clinical coding, epidemiology, and health statistics.
Key Neurological Codes
| Code range | Domain |
|---|---|
| G00–G99 | Diseases of the nervous system |
| G20 | Parkinson’s disease |
| G30 | Alzheimer’s disease |
| G35 | Multiple sclerosis |
| G40 | Epilepsy |
| F00–F99 | Mental and behavioural disorders |
| G10–G13 | Hereditary and degenerative diseases of the nervous system |
Connections
- relatedTo: OMOP CDM (ICD-10 is a core vocabulary in OMOP CDM for condition coding)
- relatedTo: HL7 FHIR (ICD-10 codes used as the condition code system in FHIR Condition resources)
- relatedTo: SNOMED CT (SNOMED CT and ICD-10 are cross-mapped for interoperability between coding systems)
- relatedTo: MONDO (MONDO maps all ICD-10 disease codes to its unified hierarchy)
- relatedTo: ORDO (ORDO cross-maps to ICD-10 for rare disease coding)
- relatedTo: ICD-11 (ICD-11 supersedes ICD-10; official WHO transition cross-map available)
Resources
- https://www.who.int/classifications/icd
- https://www.atih.sante.fr/la-classification-cim (French ATIH CIM-10 reference)
- https://athena.ohdsi.org (OMOP CDM ICD-10 vocabulary browser)

