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.
In naming organisms, biologists use binomial nomenclature, which Webster's Third International Dictionary defines as. a system of nomenclature in which each species of plant or animal receives a name of two terms of which the first identifies the genus to which it belongs and the second the species itself. For example, the house mouse has been assigned the two-part name Mus musculus, in which Mus is the genus name and musculus is the species name.