documentation:vocabulary:icd9cm
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documentation:vocabulary:icd9cm [2015/05/27 02:38] cgreich |
documentation:vocabulary:icd9cm [2024/09/02 11:30] (current) jcruz Depreciation of page and posting of corresponding link in Github wiki |
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| ===== ICD9CM ===== | ===== ICD9CM ===== | ||
| - | + | Thank you for visiting the wiki! This page has moved to https://github.com/OHDSI/Vocabulary-v5.0/wiki/Vocab.-ICD9CM. | |
| - | ==== Overview ==== | + | |
| - | + | ||
| - | ICD9CM is a coding system based on WHO ICD9 codes, but containing multiple additions and modifications. | + | |
| - | Sources | + | |
| - | * CMS: ICD-9-CM-vXX-master-descriptions.zip from http://www.cms.gov/Medicare/Coding/ICD9ProviderDiagnosticCodes/codes.html for billing codes | + | |
| - | * UMLS: for non-billing codes | + | |
| - | + | ||
| - | ==== Concept Names ==== | + | |
| - | + | ||
| - | All Concepts are assigned the longest of all available names. | + | |
| - | + | ||
| - | ==== Concept Code ==== | + | |
| - | + | ||
| - | All ICD9CM codes are represented in the format containing the dot. | + | |
| - | + | ||
| - | ==== Standard Concepts ==== | + | |
| - | + | ||
| - | All ICD9CM codes are not Standard. | + | |
| - | + | ||
| - | ==== Concept Classes ==== | + | |
| - | + | ||
| - | ^Concept Class^Active^Deprecated^Description^ | + | |
| - | |3-dig billing V code|1|0| | | + | |
| - | |3-dig billing code|92|0| | | + | |
| - | |3-dig nonbill V code|89|0| | | + | |
| - | |3-dig nonbill code|836|0| | | + | |
| - | |4-dig billing E code|44|0|There are no 3-digit E codes| | + | |
| - | |4-dig billing V code|474|0| | | + | |
| - | |4-dig billing code|3863|0| | | + | |
| - | |4-dig nonbill E code|171|0| | | + | |
| - | |4-dig nonbill V code|159|0| | | + | |
| - | |4-dig nonbill code|1730|0| | | + | |
| - | |5-dig billing E code|1247|0|There are no 5-digit codes that are non-billing| | + | |
| - | |5-dig billing V code|634|0| | | + | |
| - | |5-dig billing code|8212|0| | | + | |
| - | |ICD9CM V code|0|1108|Legacy class| | + | |
| - | |ICD9CM code|0|12|Legacy class| | + | |
| - | + | ||
| - | ==== Domains ==== | + | |
| - | For each ICD9CM Concept, the Domain is inferred from the SNOMED Concept it is mapped to. If it is mapped to more than one concept, a combination Domain is assigned. | + | |
| - | + | ||
| - | ^Domain^Active^Deprecated^Description^ | + | |
| - | |Condition|14415|140|Bulk of ICD9CM codes| | + | |
| - | |Observation|2606|579| | | + | |
| - | |Procedure|330|314| | | + | |
| - | |Measurement|201|13| | | + | |
| - | |Meas/Procedure|0|22|Deprecated codes| | + | |
| - | |Condition/Meas|0|33|Deprecated codes| | + | |
| - | |Condition/Procedure|0|19|Deprecated codes| | + | |
| - | + | ||
| - | Relationships | + | |
| - | There are two types of relationships: | + | |
| - | 1. Direct maps to SNOMED through "Maps to" relationships. These are manually curated based on input from UMLS (connection to common CUIs) and MedDRA (connection provided with MedDRA and subsequent relationship between MedDRA and SNOMED, see there). Pre-coordinated Concepts are mapped, if possible, to their components. For example, XXX. | + | |
| - | 2. Maps for Concepts that do not represent entities at the time of recording. For example, Concepts for history of, family history of, need for vaccination, XXX etc. refer to observations that are made recorded at a certain time, but the medical entity they are referring to, such as the disease for which family history is recorded, belongs to a different point in time. These codes are mapped to SNOMED Observation Concepts using the "Maps to" relationship, and to the relevant medical entity to the "Maps to value" relationship. | + | |
| - | 3. Hierarchical relationships between 3, 4 and 5-digit Concepts. These are constructed for those Concepts where the shorter code is entirely subsumed by longer one. Note that these relationships also exist between 3 and 5-digit codes according to these rules, which deviates from the preferred convention that "Subsumes" and "Is a" relationships only exist between directly related Concepts. | + | |
| - | Hierarchy | + | |
| - | ICD9CM Concepts are not Standard Concepts and therefore do not participate in the Hierarchy of the OMOP Standardized Vocabularies. | + | |
documentation/vocabulary/icd9cm.1432694303.txt.gz · Last modified: 2015/05/27 02:38 by cgreich
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