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documentation:vocabulary:icd10 [2016/06/04 23:25]
cgreich created
documentation:vocabulary:icd10 [2020/08/19 08:12] (current)
ptalapova
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 ===== ICD10 ===== ===== ICD10 =====
-ICD10 (often spelled "​ICD-10"​ is a coding system developed by the WHO+ICD10 (often spelled "​ICD-10"​is a coding system developed by the WHO for the purpose of disease and mortality reporting.
  
 **Note:** In some countries, ICD10 is extended by local codes. For example, in the US a derivative system called ICD10CM is in use, in Germany a similar ICD10GM. Even though many of the codes are shared, those country-specific coding systems are separate and distinct vocabularies in their own right in the OMOP Standardized Vocabularies. **Note:** In some countries, ICD10 is extended by local codes. For example, in the US a derivative system called ICD10CM is in use, in Germany a similar ICD10GM. Even though many of the codes are shared, those country-specific coding systems are separate and distinct vocabularies in their own right in the OMOP Standardized Vocabularies.
 +
 +==== Sources =====
 +  * [[https://​icd.who.int/​browse10/​2019/​en|WHO ICD10 Guideline]] ​
 +  * [[https://​apps.who.int/​classifications/​apps/​icd/​ClassificationDownloadNR/​login.aspx?​ReturnUrl=%2fclassifications%2fapps%2ficd%2fClassificationDownload%2fDLArea%2fDownload.aspx|Classifications Download ​ Area]]
  
 ==== Transformation ===== ==== Transformation =====
-The procedures for transforming Concepts from the source to the OMOP Standard Vocabularies can be found [[https://​github.com/​OHDSI/​Vocabulary-v5.0/​tree/​master/​ICD10|here]].+The procedures for transforming Concepts from the source to the OMOP Standard Vocabularies can be found [[https://​github.com/​OHDSI/​Vocabulary-v5.0/​tree/​master/​ICD10|on the OHDSI GitHub]].
  
 ==== Concept Names ==== ==== Concept Names ====
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 ==== Standard Concepts ==== ==== Standard Concepts ====
-All ICD10 codes are non-Standard.+All ICD10 codes are non-Standard ​which means that they are mapped to the respective Standard concepts defined by the vocabulary team. Technically,​ they have single (1-to-1) or several (1-to-many) "Maps to" relationships in the concept_relationship_table.
  
 ==== Concept Classes ==== ==== Concept Classes ====
-XXX +ICD10 has two Concept Classes: "ICD10 code" and "ICD10 Hierarchy"​. "ICD10 Hierarchy"​ Concepts are all highest level 3-character codes. All codes which are subclassifications of them and contain a dot in the code are Concept Class "ICD10 code".
- +
-^Concept Class^Notes^ +
-|XXX| |+
  
 ==== Domains ==== ==== Domains ====
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 ^Domain^Notes^ ^Domain^Notes^
-|Condition|Bulk of ICD10 codes|+|Condition|Bulk of ICD9CM ​codes
 +|Measurement| ​|
 |Observation| | |Observation| |
 |Procedure| | |Procedure| |
-|Measurement| | 
-XXX 
  
 ==== Concept Relationships ==== ==== Concept Relationships ====
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 ICD10 concepts are non-Standard Concepts and therefore are mapped to Standard Concepts through records in the CONCEPT_RELATIONSHIP table. All such mappings point to SNOMED-based concepts. Most of these SNOMED Concepts are in the Condition Domain, but despite the fact that ICD10 is a "​Classification of Disease"​ some of them get mapped to Procedure, Measurement and Observation Domain Concepts. All mappings are manually maintained by a team of curators. ICD10 concepts are non-Standard Concepts and therefore are mapped to Standard Concepts through records in the CONCEPT_RELATIONSHIP table. All such mappings point to SNOMED-based concepts. Most of these SNOMED Concepts are in the Condition Domain, but despite the fact that ICD10 is a "​Classification of Disease"​ some of them get mapped to Procedure, Measurement and Observation Domain Concepts. All mappings are manually maintained by a team of curators.
  
-Most mappings establish one-to-one equivalence between the Concepts. However, some ICD10 Concepts are pre-coordinated (consist of several semantic components),​ contain negations, declarations about conditions at an unspecified time in the past (e.g. medical history of), declarations about people other than the patient (e.g. family history), lab test findings, mixed mother/​child conditions or Observations. All these cases are properly handled as described in the XXX+Most mappings establish one-to-one equivalence between the Concepts. However, some ICD10 Concepts are pre-coordinated (consist of several semantic components),​ contain negations, declarations about conditions at an unspecified time in the past (e.g. medical history of), declarations about people other than the patient (e.g. family history), lab test findings, mixed mother/​child conditions or Observations. All these cases are properly handled as described in the [[documentation:​vocabulary:​mapping|Mapping description]]
  
 === Instructions for ETL === === Instructions for ETL ===
-All ICD10 concepts are non-Standard. That meansthey have to be mapped to the corresponding Standard Concepts using the CONCEPT_RELATIONSHIP table ("Maps to" and occasionally "Maps to value" records). Most of them map to single Condition Concepts, generating one-to-one records in the CONDITION_OCCURRENCE table, but some of them create multiple records or mappings to other domains.+All ICD10 concepts are non-Standard. That means they have to be mapped to the corresponding Standard Concepts using the CONCEPT_RELATIONSHIP table ("Maps to" and occasionally "Maps to value" records). Most of them are mapped ​to single Condition Concepts, generating one-to-one records in the CONDITION_OCCURRENCE table, but some of them create multiple records or mappings to other domains.
  
 ==== Hierarchy ==== ==== Hierarchy ====
 ICD10 Concepts are non-Standard Concepts and therefore do not participate in the hierarchy of the CONCEPT_ANCESTOR table. ICD10 Concepts are non-Standard Concepts and therefore do not participate in the hierarchy of the CONCEPT_ANCESTOR table.
  
documentation/vocabulary/icd10.1465082735.txt.gz · Last modified: 2016/06/04 23:25 by cgreich