| Description | SNOMED International concepts are organized into 12 axes. The 12 axes are:<br><br>Chemicals, Drugs and Biological Products,<br>Diseases/Diagnoses,<br>Function,<br>General Linkage/Modifiers,<br>List of Pharmaceutical Companies,<br>Living Organisms,<br>Morphology,<br>Occupations,<br>Physical Agents, Forces, and Activities,<br>Procedures,<br>Social Context, and<br>Topography.<br><br>SNOMED International has been superseded by the Systematized Nomenclature of Medicine – Reference Terminology (SNOMED RT®). SNOMED RT has been merged with Clinical Terms Version 3 (CTV3), also known as Read Codes, resulting in the creation of SNOMED Clinical Terms (SNOMED CT®). For more information about SNOMED CT in the Metathesaurus, see the SNOMED CT source synopsis.<br><br>Cote, Roger A., editor. Systematized Nomenclature of Human and Veterinary Medicine: SNOMED International. Northfield (IL): College of American Pathologists; Schaumburg (IL): American Veterinary Medical Association, Version 3.5, 1998. |