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documentation:vocabulary:icd10cm [2016/01/10 22:30]
dimshitc1
documentation:vocabulary:icd10cm [2016/06/04 23:26] (current)
cgreich
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-Mapping rules for ICD10CM+===== ICD10CM ​===== 
 +ICD10CM, often spelled "​ICD-10-CM",​ is a coding system in the USA, which is based on the WHO ICD10 coding system, but contains a large number of additions and extensions:​ 
 +  * Laterality of conditions 
 +  * Initial encounter, subsequent encounter with the healthcare system 
 +  * Routine healing and delayed healing information 
 +  * More detail for injuries and external causes of injuries
  
-1If we have kind of group  +**Note:** ICD10CM is often simply referred to as "​ICD-10"​ in the literature, creating confusion with the WHO ICD10Many of the codes are equivalent, but because ​of the modifications and additions it is a vocabulary in its own right in the OMOP Standardized VocabulariesFor a discussion ​of the WHO ICD10 please visit [[documentation:​vocabulary:​icd10|here]]
-T22.042  ​       Burn of unspecified degree of left axilla +
-T22.042A Burn ​of unspecified degree of left axilla, initial encounter +
-T22.042D Burn of unspecified degree of left axilla, subsequent encounter +
-T22.042S Burn of unspecified degree of left axilla, sequela+
  
-T22.042  ​       Burn of unspecified degree of left axilla +==== Transformation ===== 
-T22.042A Burn of unspecified degree of left axilla, initial encounter +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/​ICD10CM|here]].
-T22.042D Burn of unspecified degree of left axilla, subsequent encounter +
-we map to  84493007 Burn of axilla (condition described in parent node itself)+
  
-and T22.042S Burn of unspecified degree of left axilla, sequela ​ +==== Concept Names ==== 
-we map to 77890001 Late effect ​of burn of extremities,​ except wrist AND hand (consequence of this condition as a distinct concept in a target vocabulary)+All Concepts are assigned the longest ​of all available names.
  
-The same rule if we have more concepts there like+==== Concept Code ==== 
 +All ICD10CM codes are represented in the format containing the dot. 
  
-S62.299A Other fracture of first metacarpal bone, unspecified hand, initial encounter for closed fracture +==== Standard Concepts ==== 
-S62.299B Other fracture of first metacarpal bone, unspecified hand, initial encounter for open fracture +All ICD10CM codes are non-Standard.
-S62.299D Other fracture of first metacarpal bone, unspecified hand, subsequent encounter for fracture with routine healing +
-S62.299G Other fracture of first metacarpal bone, unspecified hand, subsequent encounter for fracture with delayed healing +
-S62.299K Other fracture of first metacarpal bone, unspecified hand, subsequent encounter for fracture with nonunion +
-S62.299P Other fracture of first metacarpal bone, unspecified hand, subsequent encounter for fracture with malunion +
-S62.299S Other fracture of first metacarpal bone, unspecified hand, sequela +
-or even  +
-S82.62 Displaced fracture of lateral malleolus of left fibula +
-S82.62XA Displaced fracture of lateral malleolus of left fibula, initial encounter for closed fracture +
-S82.62XB Displaced fracture of lateral malleolus of left fibula, initial encounter for open fracture type I or II +
-S82.62XC Displaced fracture of lateral malleolus of left fibula, initial encounter for open fracture type IIIA, IIIB, or IIIC +
-S82.62XD Displaced fracture of lateral malleolus of left fibula, subsequent encounter for closed fracture with routine healing +
-S82.62XE Displaced fracture of lateral malleolus of left fibula, subsequent encounter for open fracture type I or II with routine healing +
-S82.62XF Displaced fracture of lateral malleolus of left fibula, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing +
-S82.62XG Displaced fracture of lateral malleolus of left fibula, subsequent encounter for closed fracture with delayed healing +
-S82.62XH Displaced fracture of lateral malleolus of left fibula, subsequent encounter for open fracture type I or II with delayed healing +
-S82.62XJ Displaced fracture of lateral malleolus of left fibula, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with delayed healing +
-S82.62XK Displaced fracture of lateral malleolus of left fibula, subsequent encounter for closed fracture with nonunion +
-S82.62XM Displaced fracture of lateral malleolus of left fibula, subsequent encounter for open fracture type I or II with nonunion +
-S82.62XN Displaced fracture of lateral malleolus of left fibula, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion +
-S82.62XP Displaced fracture of lateral malleolus of left fibula, subsequent encounter for closed fracture with malunion +
-S82.62XQ Displaced fracture of lateral malleolus of left fibula, subsequent encounter for open fracture type I or II with malunion +
-S82.62XR Displaced fracture of lateral malleolus of left fibula, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunion +
-S82.62XS Displaced fracture of lateral malleolus of left fibula, sequela +
-**S as last symbol of code means sequela**+
  
 +==== Concept Classes ====
 +ICD10CM Concept Classes identify each Concept as part of the general coding scheme of diagnoses and disorders, classified into 21 Chapters (not explicitely identified in the OMOP Standardized Vocabularies). In addition, the Concept Classes distinguish between billing and non-billing codes. These are defined according to the Health Care Services Coding System of the Centers of Medicare and Medicaid Services (CMS). Billing codes are those that are designated for reimbursement of services, while higher level codes are non-billing.
 +
 +^Concept Class^Notes^
 +|3-char nonbill code| |
 +|3-char billing code| |
 +|4-char nonbill code| |
 +|4-char billing code| |
 +|5-char nonbill code| |
 +|5-char billing code| |
 +|6-char nonbill code| |
 +|6-char billing code| |
 +|7-char billing code|There are no 7-character non-billing codes|
 +
 +==== Domains ====
 +For each ICD10CM Concept, the Domain is inferred from the SNOMED Concept it is mapped to. If a ICD10CM Source Concept is mapped to more than one target SNOMED Concept, a combination Domain is assigned. If a ICD10CM Concept has no mappings the Domain is inferred from it's neighboring codes.
 +
 +^Domain^Notes^
 +|Condition|Bulk of ICD9CM codes|
 +|Condition| |
 +|Condition/​Device| |
 +|Condition/​Meas|Only deprecated legacy codes|
 +|Device| |
 +|Measurement| |
 +|Observation| |
 +|Procedure| |
 +
 +==== Concept Relationships ====
 +There are only mapping relationships defined for ICD10CM.
 +
 +=== ICD10CM to SNOMED map ===
 +
 +ICD10CM 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 ICD10CM 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 ICD10CM 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 ===
 +All ICD10CM 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 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.
 +
 +==== Hierarchy ====
 +ICD10CM Concepts are non-Standard Concepts and therefore do not participate in the hierarchy of the CONCEPT_ANCESTOR table.
  
documentation/vocabulary/icd10cm.1452465050.txt.gz · Last modified: 2016/01/10 22:30 by dimshitc1