Human immunodeficiency virus [HIV] disease. 1  B20 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. 2  Reimbursement claims with a date of service on or after Oct 1, 2015 require the use of ICD-10-CM codes.  This is the American ICD-10-CM version of B20.
The process of naming and classifying organisms according to set of rules is called taxonomy. In some cultures, taxonomic rules are based traditional uses for plants and animals, and the existence of classification system facilities the transfer of that knowledge through generations.ummary. Modern taxonomy officially began in 1758 with Systema Naturae, the classic work by Carolus Linnaeus. This module, the first in a two-part series on species taxonomy, focuses on Linnaeusâ system for classifying and naming plants and animals.
The second feature of Linnaeus's taxonomy system that simplifies organism classification is the ordering of species into broad categories. The major categories include: Kingdom, Phylum, Class, Order, Family, Genus, and Species.These categories have been updated to include Domain in the taxonomic hierarchy.innaeus's taxonomy system has two main features that contribute to its ease of use in naming and grouping organisms. The first is the use of binomial nomenclature. This means that an organism's scientific name is comprised of a combination of two terms. These terms are the genus name and the species or epithet.