1 On September 5, 2013, CMS released guidance that discussed the provisions of the final rule regarding the physician order and physician certification of hospital inpatient services. 2  This document includes further clarification of issues addressed in the previous guidance.
Full Answer. Also called a dichotomous key, a taxonomic key gives users a systematic and reproducible way to identify items and organisms. It is used for a variety of purposes, such as identifying unknown organisms to a certain taxonomic level (e.g. family, genus and species) and identifying rocks or minerals.
The science of naming and grouping organisms is called systematics. In the 1730s, Carolus Linnaeus developed a naming system, called binomial nomenclature. In binomial nomenclature, each species is assigned a two-part scientific name: The first part of the name refers to the genus, or a group of similar species.