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.
A hierarchical system is used for classifying organisms to the species level. This system is called taxonomic classification. The broadest classifications are by domain and kingdom; the most specific classification is by genus and species.The hierarchical groupings in between include phylum, class, family, and order.cientific names are derived from the genus and species names in a system known as binomial nomenclature (âbiâ = two; ânomâ = name). When species names appear in print, the genus is always capitalized and the species name is not, and both names appear in italics (or underlined).