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SNOMED started in 1965 as a Systematized Nomenclature of Pathology (SNOP) and was further developed into a logic-based health care terminology. [6] [7]SNOMED CT was created in 1999 by the merger, expansion and restructuring of two large-scale terminologies: SNOMED Reference Terminology (SNOMED RT), developed by the College of American Pathologists (CAP); and the Clinical Terms Version 3 (CTV3 ...
In 2002 CAP's SNOMED Reference Terminology (SNOMED RT) was merged with, and expanded by, the National Health Service's Clinical Terms Version 3 (previously known as the Read codes) to produce SNOMED CT. [2] [3] Versions of SNOMED released prior to 2001 were based on a multiaxial, hierarchical classification system. [1] [4] As in any such system ...
The first version was developed in the early 1980s by Dr James Read, a Loughborough general medical practitioner. [2] The scheme was structured similarly to ICD-9: . each code was composed of four consecutive characters: first character 0-9, A-Z (excepting I and O), remaining three characters 0-9, A-Z/a-z (excepting i,I,o and O) plus up to three trailing period '.' characters
SNOMED CT and ICD are used directly by healthcare providers during the process of care, [32] in addition, ICD can be also used for coding after the episode of care, in lower technology environments. SNOMED CT has multiple hierarchy, whereas there is single primary hierarchy for ICD-11 with alternative multiple hierarchies.
Diagnosis codes (1 C, 32 P) M. ... SNOMED CT; T. TIME-ITEM; Tuberculosis classification; W. WHOART; World Health Organization Composite International Diagnostic Interview
International Classification of Primary Care (ICPC-2), as well as procedure codes; ICPC-2 also contains diagnosis codes, reasons for encounter (RFE), and process of care. International Classification of Procedures in Medicine (ICPM) and International Classification of Health Interventions (ICHI) [1] SNOMED CT
It includes references to existing international standards such as ICD-10, ICD-11, ICF as well as SNOMED CT clinical terminology. It provides a framework for documenting and organizing clinical data from primary care patient contacts. The ICPC-3 includes codes for the four key elements of healthcare encounters: the reason for the encounter (RFE);
For example, SNOMED CT concept model for procedure allows linking substances to procedures using 'Direct Substance' attribute. Similarly, the ICHI allows postcoordination with devices or substances. As a result, the scope for the set of relationships in ICHI is broader than in SNOMED CT, due to the common foundation with ICD-11.