MACs develop an LCD when there is no national coverage determination (NCD) (e.g., when an item or service is new) or when there is a need to further define an NCD for the specific jurisdiction. Accessibility StatementFor more information contact us atinfo@libretexts.org. Simple. By using this website, you signify your acceptance of Terms and Conditions and Privacy Policy. End User Point and Click Amendment: (a) Erin Brockovich found that Cr(VI), used by PG&E, had contaminated the Hinckley, California, water supply. If we were to use the stems and suffixes of the common system, the names would be ferrous chloride and ferric chloride, respectively (Figure \(\PageIndex{3}\)) . Some compounds containing hydrogen are members of an important class of substances known as acids. An asterisk (*) indicates a The AMA disclaims responsibility for any consequences or liability attributable to or related to any use, non-use, or interpretation of information contained or not contained in this file/product. ACMG Practice Guideline: lack of evidence for MTHFR. ), Do not sell or share my personal information. Please enable JavaScript in order to use this website. The AMA does not directly or indirectly practice medicine or dispense medical services. Your MCD session is currently set to expire in 5 minutes due to inactivity. Both the gamma and the beta forms are metastable, eventually converting to the stable alpha form if left standing for sufficient time. When two nonmetallic elements form a molecular compound, several combination ratios are often possible. This site uses cookies. 42 CFR 410.32 Diagnostic x-ray tests, diagnostic laboratory tests, and other diagnostic tests: Conditions. The contractor information can be found at the top of the document in the Contractor Information section (expand the section to see the details). Please follow the steps below to This effect is known as the "alpha explosion". Nomenclature, a collection of rules for naming things, is important in science and in many other situations.This module describes an approach that is used to name simple ionic and molecular compounds, such as NaCl, CaCO 3, and N 2 O 4.The simplest of these are binary compounds, those containing only two elements, but we will also consider how to name ionic compounds containing polyatomic ions . Legal. and/or making any commercial use of UB‐04 Manual or any portion thereof, including the codes and/or descriptions, is only In many cases, the stem of the element name comes from the Latin name of the element. These compounds are colourless liquids at room temperature. By the Stock system, the names are iron(II) chloride and iron(III) chloride (Figure \(\PageIndex{2}\)). Annual review completed 12/03/2018. [3] The last one can be readily distinguished from the similar carbon compound, iodoform which is a yellow solid at room temperature. "JavaScript" disabled. A Local Coverage Determination (LCD) is a decision made by a Medicare Administrative Contractor (MAC) on whether a particular service or item is reasonable and necessary, and therefore covered by Medicare within the specific jurisdiction that the MAC oversees. Please do not use this feature to contact CMS. Venous thrombosis, age over 50, except when active malignancy is present; Relatives of individuals known to have FVL. presented in the material do not necessarily represent the views of the AHA. Structure. )COMPOUND NAME OF I4F9 6.) 08/12/2021-Under Bibliography changes were made to citations to reflect AMA citation guidelines. Information on patterns is provided in the section below. If an entity wishes to utilize any AHA materials, please contact the AHA at 312‐893‐6816. All Rights Reserved (or such other date of publication of CPT). One example is the ammonium sulfate compound in Figure \(\PageIndex{6}\). Creative Commons Attribution License The same issue arises for other ions with more than one possible charge. resale and/or to be used in any product or publication; creating any modified or derivative work of the UB‐04 Manual and/or codes and descriptions; LCDs outline how the contractor will review claims to ensure that the services provided meet Medicare coverage requirements. This is a non-coverage policy for genetic testing for thrombophilia testing for the Factor V Leiden (FVL) variant in F5 gene, the 20210G>(G20210A) variant in the F2 gene, and the MTHFR gene which encodes the 5, 10-methylenetetrahydrofolate reductase enzyme. You shall not remove, alter, or obscure any ADA copyright notices or other proprietary rights notices included in the materials. Instructions for enabling "JavaScript" can be found here. Often the substrates are organic, as in aromatic sulfonation. Any chemical element. It is useful only when results will affect management decisions, and it is not useful in situations where treatment is indicated for other risk factors. Similarly, O2 is the oxide ion, Se2 is the selenide ion, and so forth. This system recognizes that many metals have two common cations. If you dont find the Article you are looking for, contact your MAC. [13] With pyridine, it give the sulfur trioxide pyridine complex. Please visit the, Anti-phospholipid antibody (lupus anticoagulant), Activated Protein C resistance (a surrogate for Factor V Leiden mutation). This documentation includes, but is not limited to, relevant medical history, physical examination, and results of pertinent diagnostic tests or procedures. [2] It has also been of interest in the manufacture and etching of silicon in microelectronics. No fee schedules, basic unit, relative values or related listings are included in CPT. preparation of this material, or the analysis of information provided in the material. Proposed LCD document IDs begin with the letters "DL" (e.g., DL12345). CPT codes, descriptions and other data only are copyright 2022 American Medical Association. The second system, called the common system, is not conventional but is still prevalent and used in the health sciences. Akin to the behavior of H2O, hydrogen fluoride adds to give fluorosulfuric acid: SO3 reacts with dinitrogen pentoxide to give the nitronium salt of pyrosulfate: Sulfur trioxide is an oxidant. The AMA does not directly or indirectly practice medicine or dispense medical services. 1999-2023, Rice University. Thus heating a crystal of -SO3 to its melting point results in a sudden increase in vapor pressure, which can be forceful enough to shatter a glass vessel in which it is heated. Numbered the bibliography. In 2008, the American College of Chest Physicians (ACCP) published guidelines for the treatment of thromboembolic disease stated the following concerning genetic testing for thrombophilia: In the 2012, ACCP Clinical Practice Guidelines, Guyatt10 and Bates3 make the following recommendations for treatment and management of VTE: In the 2013, American Congress of Obstetricians and Gynecologists (ACOG) clinical management guidelines for inherited thrombophilia in pregnancy, ACOG experts note that the following guidelines are based on limited or inconsistent scientific evidence:Screening for thrombophilia is controversial. To submit a comment or question to CMS, please use the Feedback/Ask a Question link available at the bottom The Tracking Sheet provides key details about the Proposed LCD, including a summary of the issue, who requested the new/updated policy, links to key documents, important process-related dates, who to contact with questions about the policy, and the history of previous policy considerations. Elemental composition of Si3I8 Element Symbol Atomic weight Atoms Mass percent Silicon Si 28.0855 3 7.6632 Iodine I 126.90447 8 92.3368 Mass percent composition Atomic percent composition Formula in Hill system is I8Si3 Computing molar mass (molar weight) To calculate molar mass of a chemical compound enter its formula and click 'Compute'. { "5.01:_Sugar_and_Salt" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "5.02:_Compounds_Display_Constant_Composition" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "5.03:_Chemical_Formulas-_How_to_Represent_Compounds" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "5.04:_A_Molecular_View_of_Elements_and_Compounds" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "5.05:_Writing_Formulas_for_Ionic_Compounds" : 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MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "zz:_Back_Matter" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()" }, [ "article:topic", "showtoc:no", "license:ccbyncsa", "licenseversion:40" ], https://chem.libretexts.org/@app/auth/3/login?returnto=https%3A%2F%2Fchem.libretexts.org%2FCourses%2FCollege_of_Marin%2FCHEM_114%253A_Introductory_Chemistry%2F05%253A_Molecules_and_Compounds%2F5.07%253A_Naming_Ionic_Compounds, \( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}}}\) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash{#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\), Example \(\PageIndex{3}\): Naming Ionic Compounds, Example \(\PageIndex{5}\): Naming Ionic Compounds, Naming Binary Ionic Compounds with a Metal that Forms Only One Type of Cation, Naming Binary Ionic Compounds with a Metal That Forms More Than One Type of Cation, Naming Ionic Compounds with Polyatomic Ions, 1.4: The Scientific Method: How Chemists Think, Chapter 2: Measurement and Problem Solving, 2.2: Scientific Notation: Writing Large and Small Numbers, 2.3: Significant Figures: Writing Numbers to Reflect Precision, 2.6: Problem Solving and Unit Conversions, 2.7: Solving Multistep Conversion Problems, 2.10: Numerical Problem-Solving Strategies and the Solution Map, 2.E: Measurement and Problem Solving (Exercises), 3.3: Classifying Matter According to Its State: Solid, Liquid, and Gas, 3.4: Classifying Matter According to Its Composition, 3.5: Differences in Matter: Physical and Chemical Properties, 3.6: Changes in Matter: Physical and Chemical Changes, 3.7: Conservation of Mass: There is No New Matter, 3.9: Energy and Chemical and Physical Change, 3.10: Temperature: Random Motion of Molecules and Atoms, 3.12: Energy and Heat Capacity Calculations, 4.4: The Properties of Protons, Neutrons, and Electrons, 4.5: Elements: Defined by Their Numbers of Protons, 4.6: Looking for Patterns: The Periodic Law and the Periodic Table, 4.8: Isotopes: When the Number of Neutrons Varies, 4.9: Atomic Mass: The Average Mass of an Elements Atoms, 5.2: Compounds Display Constant Composition, 5.3: Chemical Formulas: How to Represent Compounds, 5.4: A Molecular View of Elements and Compounds, 5.5: Writing Formulas for Ionic Compounds, 5.11: Formula Mass: The Mass of a Molecule or Formula Unit, 6.5: Chemical Formulas as Conversion Factors, 6.6: Mass Percent Composition of Compounds, 6.7: Mass Percent Composition from a Chemical Formula, 6.8: Calculating Empirical Formulas for Compounds, 6.9: Calculating Molecular Formulas for Compounds, 7.1: Grade School Volcanoes, Automobiles, and Laundry Detergents, 7.4: How to Write Balanced Chemical Equations, 7.5: Aqueous Solutions and Solubility: Compounds Dissolved in Water, 7.6: Precipitation Reactions: Reactions in Aqueous Solution That Form a Solid, 7.7: Writing Chemical Equations for Reactions in Solution: Molecular, Complete Ionic, and Net Ionic Equations, 7.8: AcidBase and Gas Evolution Reactions, Chapter 8: Quantities in Chemical Reactions, 8.1: Climate Change: Too Much Carbon Dioxide, 8.3: Making Molecules: Mole-to-Mole Conversions, 8.4: Making Molecules: Mass-to-Mass Conversions, 8.5: Limiting Reactant, Theoretical Yield, and Percent Yield, 8.6: Limiting Reactant, Theoretical Yield, and Percent Yield from Initial Masses of Reactants, 8.7: Enthalpy: A Measure of the Heat Evolved or Absorbed in a Reaction, Chapter 9: Electrons in Atoms and the Periodic Table, 9.1: Blimps, Balloons, and Models of the Atom, 9.5: The Quantum-Mechanical Model: Atoms with Orbitals, 9.6: Quantum-Mechanical Orbitals and Electron Configurations, 9.7: Electron Configurations and the Periodic Table, 9.8: The Explanatory Power of the Quantum-Mechanical Model, 9.9: Periodic Trends: Atomic Size, Ionization Energy, and Metallic Character, 10.2: Representing Valence Electrons with Dots, 10.3: Lewis Structures of Ionic Compounds: Electrons Transferred, 10.4: Covalent Lewis Structures: Electrons Shared, 10.5: Writing Lewis Structures for Covalent Compounds, 10.6: Resonance: Equivalent Lewis Structures for the Same Molecule, 10.8: Electronegativity and Polarity: Why Oil and Water Dont Mix, 11.2: Kinetic Molecular Theory: A Model for Gases, 11.3: Pressure: The Result of Constant Molecular Collisions, 11.5: Charless Law: Volume and Temperature, 11.6: Gay-Lussac's Law: Temperature and Pressure, 11.7: The Combined Gas Law: Pressure, Volume, and Temperature, 11.9: The Ideal Gas Law: Pressure, Volume, Temperature, and Moles, 11.10: Mixtures of Gases: Why Deep-Sea Divers Breathe a Mixture of Helium and Oxygen, Chapter 12: Liquids, Solids, and Intermolecular Forces, 12.3: Intermolecular Forces in Action: Surface Tension and Viscosity, 12.6: Types of Intermolecular Forces: Dispersion, DipoleDipole, Hydrogen Bonding, and Ion-Dipole, 12.7: Types of Crystalline Solids: Molecular, Ionic, and Atomic, 13.3: Solutions of Solids Dissolved in Water: How to Make Rock Candy, 13.4: Solutions of Gases in Water: How Soda Pop Gets Its Fizz, 13.5: Solution Concentration: Mass Percent, 13.9: Freezing Point Depression and Boiling Point Elevation: Making Water Freeze Colder and Boil Hotter, 13.10: Osmosis: Why Drinking Salt Water Causes Dehydration, 14.1: Sour Patch Kids and International Spy Movies, 14.4: Molecular Definitions of Acids and Bases, 14.6: AcidBase Titration: A Way to Quantify the Amount of Acid or Base in a Solution, 14.9: The pH and pOH Scales: Ways to Express Acidity and Basicity, 14.10: Buffers: Solutions That Resist pH Change.