documentation:vocabulary:cpt4
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documentation:vocabulary:cpt4 [2015/09/11 00:25] cgreich |
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| - | ===== CPT-4 ===== | + | ===== CPT4 ===== |
| - | CPT4 is a coding system for the reimbursement of ambulatory services in the US healthcare system. | + | CPT4 is a coding system for the reimbursement of ambulatory services in the US healthcare system. **Note**: CPT4 is called Common Procedural Terminology, but it does not just contain medical procedures. |
| ==== Sources ==== | ==== Sources ==== | ||
| - | All CPT4 codes are sourced from the NLM, as are the relationships from MeSH and LOINC. Relationships to SNOMED and RxNorm (see below for Procedure Drugs) are provided by OHDSI. | + | All CPT4 codes are sourced from the NLM, as are maps from MeSH and relationships to LOINC. Relationships to SNOMED and RxNorm (see below for Procedure Drugs) are provided by OHDSI. |
| ==== Standard Concepts ==== | ==== Standard Concepts ==== | ||
| All valid CPT4 Concepts are Standard Concepts, with the exception of CPT4 section or subsection heading codes (CPT4 Hierarchy Concepts), which are Classification Concepts. | All valid CPT4 Concepts are Standard Concepts, with the exception of CPT4 section or subsection heading codes (CPT4 Hierarchy Concepts), which are Classification Concepts. | ||
| + | |||
| ==== Concept Classes ==== | ==== Concept Classes ==== | ||
| Concepts are assigned Concept Class as following: | Concepts are assigned Concept Class as following: | ||
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| Domains are manually assigned to CPT4 Hierarchy Concepts and propagated down to the CPT4 Concepts. | Domains are manually assigned to CPT4 Hierarchy Concepts and propagated down to the CPT4 Concepts. | ||
| - | ==== Relationships ==== | + | ==== Relationships, Hierarchy ==== |
| Relationships are defined within CPT4 and to the following other vocabularies: | Relationships are defined within CPT4 and to the following other vocabularies: | ||
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| === Hierarchy === | === Hierarchy === | ||
| - | |||
| CPT4 contributes to the hierarchies of the Procedure, Measurement and Observation Domains. SNOMED provides the higher hierarchical concepts, while CPT4 are connected as descendents all the way down to leaf nodes. | CPT4 contributes to the hierarchies of the Procedure, Measurement and Observation Domains. SNOMED provides the higher hierarchical concepts, while CPT4 are connected as descendents all the way down to leaf nodes. | ||
| - | === Mappings === | + | === Maps === |
| - | + | All valid CPT4 codes are Standard Concepts and therefore map to themselves. In addition, there are mappings to RxNorm Drug concepts for Procedure Drugs. | |
| - | All valid CPT4 codes are Standard Concepts and therefore map to themselves. In addition, there are mappings to RxNorm Drug concepts for Procedure Drugs (see below). | + | |
| - | + | ||
| - | === CPT4 to RxNorm mappings === | + | |
| - | + | ||
| - | The only mapping relationships CPT4 | + | |
| + | === CPT4 to RxNorm map === | ||
| In CPT4, only vaccinations are recorded in sufficient detail that the administered drug can be inferred. Other Procedure Drugs, such as chemotherapies, are only mentioned as general Procedures, without mentioning any specific Drug Product. The Vaccine Concepts are between concept_code 90281 and 90749. They are also descendants of the CPT4 hierarchical term 1012602 "Vaccines, Toxoids". | In CPT4, only vaccinations are recorded in sufficient detail that the administered drug can be inferred. Other Procedure Drugs, such as chemotherapies, are only mentioned as general Procedures, without mentioning any specific Drug Product. The Vaccine Concepts are between concept_code 90281 and 90749. They are also descendants of the CPT4 hierarchical term 1012602 "Vaccines, Toxoids". | ||
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| ** Ambiguous CPT4 Procedure Drug Concepts ** | ** Ambiguous CPT4 Procedure Drug Concepts ** | ||
| + | |||
| The following CPT4 Concepts cannot be unambiguously assigned to RxNorm. The reason is that there is more than one type of Vaccine availabe to immunize against a certain infectious disease, but CPT4 does not distinguish between them. For exampe, for Botulinum Antitoxin, there are human and equine antibodies or sera against the Botulinum Toxin variants A to F, and different combinations of antitoxins are on the market against these variants. | The following CPT4 Concepts cannot be unambiguously assigned to RxNorm. The reason is that there is more than one type of Vaccine availabe to immunize against a certain infectious disease, but CPT4 does not distinguish between them. For exampe, for Botulinum Antitoxin, there are human and equine antibodies or sera against the Botulinum Toxin variants A to F, and different combinations of antitoxins are on the market against these variants. | ||
documentation/vocabulary/cpt4.1441931123.txt.gz · Last modified: 2015/09/11 00:25 by cgreich
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