2026 ICD-10-CM Diagnosis Code T65.4X2AToxic effect of carbon disulfide, intentional self-harm, initial encounter

AHRQ’s CCSR groups this code into broader clinical categories.

• Alcohol Oxidoreductases

  a subclass of enzymes which includes all dehydrogenases acting on primary and secondary alcohols as well as hemiacetals. they are further classified according to the acceptor which can be nad+ or nadp+ (subclass 1.1.1), cytochrome (1.1.2), oxygen (1.1.3), quinone (1.1.5), or another acceptor (1.1.99).

• Bicarbonates

  inorganic salts that contain the -hco3 radical. they are an important factor in determining the ph of the blood and the concentration of bicarbonate ions is regulated by the kidney. levels in the blood are an index of the alkali reserve or buffering capacity.

• Blood Gas Monitoring, Transcutaneous

  the noninvasive measurement or determination of the partial pressure (tension) of oxygen and/or carbon dioxide locally in the capillaries of a tissue by the application to the skin of a special set of electrodes. these electrodes contain photoelectric sensors capable of picking up the specific wavelengths of radiation emitted by oxygenated versus reduced hemoglobin.

• Calcium Carbonate

  carbonic acid calcium salt (caco3). an odorless, tasteless powder or crystal that occurs in nature. it is used therapeutically as a phosphate buffer in hemodialysis patients and as a calcium supplement.

• Carbon

  a nonmetallic element with atomic symbol c, atomic number 6, and atomic weight [12.0096; 12.0116]. it may occur as several different allotropes including diamond; charcoal; and graphite; and as soot from incompletely burned fuel.

• Carbon Compounds, Inorganic

  inorganic compounds that contain carbon as an integral part of the molecule but are not derived from hydrocarbons.

• Carbon Cycle

  the cycle by which the element carbon is exchanged between organic matter and the earth's physical environment.

• Carbon Dioxide

  a colorless, odorless gas that can be formed by the body and is necessary for the respiration cycle of plants and animals.

• Carbon Disulfide

  a colorless, flammable, poisonous liquid, cs2. it is used as a solvent, and is a counterirritant and has local anesthetic properties but is not used as such. it is highly toxic with pronounced cns, hematologic, and dermatologic effects.

• Carbon Fiber

  fiber with a diameter of approximately 5 to 10 micrometers that is composed mostly of carbon atoms. it has a variety of applications.

• Carbon Footprint

  a measure of the total greenhouse gas emissions produced by an individual, organization, event, or product. it is measured in units of equivalent kilograms of carbon dioxide generated in a given time frame.

• Carbon Isotopes

  stable carbon atoms that have the same atomic number as the element carbon but differ in atomic weight. c-13 is a stable carbon isotope.

• Carbon Monoxide

  carbon monoxide (co). a poisonous colorless, odorless, tasteless gas. it combines with hemoglobin to form carboxyhemoglobin, which has no oxygen carrying capacity. the resultant oxygen deprivation causes headache, dizziness, decreased pulse and respiratory rates, unconsciousness, and death. (from merck index, 11th ed)

• Carbon Monoxide Poisoning

  toxic asphyxiation due to the displacement of oxygen from oxyhemoglobin by carbon monoxide.

• Carbon Radioisotopes

  unstable isotopes of carbon that decay or disintegrate emitting radiation. c atoms with atomic weights 10, 11, and 14-16 are radioactive carbon isotopes.

• Carbon Sequestration

  any of several processes for the permanent or long-term artificial or natural capture or removal and storage of carbon dioxide and other forms of carbon, through biological, chemical or physical processes, in a manner that prevents it from being released into the atmosphere.

• Carbon Tetrachloride

  a solvent for oils, fats, lacquers, varnishes, rubber waxes, and resins, and a starting material in the manufacturing of organic compounds. poisoning by inhalation, ingestion or skin absorption is possible and may be fatal. (merck index, 11th ed)

• Carbon Tetrachloride Poisoning

  poisoning that results from ingestion, injection, inhalation, or skin absorption of carbon tetrachloride.

• Carbon-13 Magnetic Resonance Spectroscopy

  magnetic resonance spectroscopy involving detection of changes in the resonance of carbon-13 nuclei in organic molecules.

• Carbonated Beverages

  drinkable liquids combined with or impregnated with carbon dioxide.

• Carbonated Water

  water naturally or artificially infused with carbon dioxide.

• Carbonates

  salts or ions of the theoretical carbonic acid, containing the radical co2(3-). carbonates are readily decomposed by acids. the carbonates of the alkali metals are water-soluble; all others are insoluble. (from grant & hackh's chemical dictionary, 5th ed)

• Carbon-Carbon Double Bond Isomerases

  enzymes that catalyze the shifting of a carbon-carbon double bond from one position to another within the same molecule. ec 5.3.3.

• Carbon-Carbon Ligases

  enzymes that catalyze the joining of two molecules by the formation of a carbon-carbon bond. these are the carboxylating enzymes and are mostly biotinyl-proteins. ec 6.4.

• Carbon-Carbon Lyases

  enzymes that catalyze the cleavage of a carbon-carbon bond by means other than hydrolysis or oxidation. this subclass contains the decarboxylases, the aldehyde-lyases, and the oxo-acid-lyases. ec 4.1.

• Carbonic Acid

  carbonic acid (h2c03). the hypothetical acid of carbon dioxide and water. it exists only in the form of its salts (carbonates), acid salts (hydrogen carbonates), amines (carbamic acid), and acid chlorides (carbonyl chloride). (from grant & hackh's chemical dictionary, 5th ed)

• Carbonic Anhydrase I

  a cytosolic carbonic anhydrase isoenzyme primarily expressed in erythrocytes, vascular endothelial cells, and the gastrointestinal mucosa. ec 4.2.1.-

• Carbonic Anhydrase II

  a cytosolic carbonic anhydrase isoenzyme found widely distributed in cells of almost all tissues. deficiencies of carbonic anhydrase ii produce a syndrome characterized by osteopetrosis, renal tubular acidosis (acidosis, renal tubular) and cerebral calcification. ec 4.2.1.-

• Carbonic Anhydrase III

  a cytosolic carbonic anhydrase isoenzyme primarily expressed in skeletal muscle (muscles, skeletal). ec 4.2.1.-

• Carbonic Anhydrase Inhibitors

  a class of compounds that reduces the secretion of h+ ions by the proximal kidney tubule through inhibition of carbonic anhydrases.

• Carbonic Anhydrase IV

  a membrane-bound carbonic anhydrase found in lung capillaries and kidney.

• Carbonic Anhydrase IX

  a carbonic anhydrase and transmembrane protein that consists of an n-terminal proteoglycan-like domain, a catalytic region, a single-pass transmembrane domain, and a short intracellular tail. it functions as a dimer and is expressed primarily by cells of the gastrointestinal tract; bile duct epithelium; and gall bladder. it is expressed at high levels in many solid tumors, especially clear cell renal carcinoma, in response to cell hypoxia.

• Carbonic Anhydrase V

  a carbonic anhydrase isoenzyme found in mitochondria where it provides bicarbonate ions that are components in the urea cycle and in gluconeogenesis.

• Carbonic Anhydrases

  a family of zinc-containing enzymes that catalyze the reversible hydration of carbon dioxide. they play an important role in the transport of carbon dioxide from the tissues to the lung. ec 4.2.1.1.

• Carbon-Nitrogen Ligases

  enzymes that catalyze the joining of two molecules by the formation of a carbon-nitrogen bond. ec 6.3.

• Carbon-Nitrogen Ligases with Glutamine as Amide-N-Donor

  enzymes that catalyze the joining of glutamine-derived ammonia and another molecule. the linkage is in the form of a carbon-nitrogen bond. ec 6.3.5.

• Carbon-Nitrogen Lyases

  enzymes that catalyze the cleavage of a carbon-nitrogen bond by means other than hydrolysis or oxidation. subclasses are the ammonia-lyases, the amidine-lyases, the amine-lyases, and other carbon-nitrogen lyases. ec 4.3.

• Carbon-Oxygen Ligases

  enzymes that catalyze the joining of two molecules by the formation of a carbon-oxygen bond. ec 6.1.

• Carbon-Oxygen Lyases

  enzymes that catalyze the cleavage of a carbon-oxygen bond by means other than hydrolysis or oxidation. ec 4.2.

• Carbon-Sulfur Ligases

  enzymes that catalyze the joining of two molecules by the formation of a carbon-sulfur bond. ec 6.2.

• Carbon-Sulfur Lyases

  enzymes that catalyze the cleavage of a carbon-sulfur bond by means other than hydrolysis or oxidation. ec 4.4.

• Carbonyl Cyanide m-Chlorophenyl Hydrazone

  a proton ionophore. it is commonly used as an uncoupling agent and inhibitor of photosynthesis because of its effects on mitochondrial and chloroplast membranes.

• Carbonyl Cyanide p-Trifluoromethoxyphenylhydrazone

  a proton ionophore that is commonly used as an uncoupling agent in biochemical studies.

• Carbonyl Reductase (NADPH)

  nadph-dependent reductase that catalyzes the reduction of many carbonyl compounds including quinones; prostaglandins; and xenobiotics.

• Carboxyhemoglobin

  enzymes that catalyze the addition of a carboxyl group to a compound (carboxylases) or the removal of a carboxyl group from a compound (decarboxylases). ec 4.1.1.

• Catabolite Repression

  process by which micro-organisms adapt quickly to a preferred rapidly-metabolizable intermediate through the inhibition or repression of genes related to catabolism of less preferred source(s).

• Dissolved Organic Matter

  a heterogeneous class of water-soluble compounds containing covalently bound carbon that are derived from a variety of biological and geological sources during the biogeochemical cycling of carbon (carbon cycle).

• Dry Ice

  a solid form of carbon dioxide used as a refrigerant.

• Heavy Ion Radiotherapy

  the use of a heavy ion particle beam for radiotherapy, such as the heavy ions of carbon.

• Iron Carbonyl Compounds

  complexes of iron atoms chelated with carbonyl ions.

• Lasers, Gas

  lasers in which a gas lasing medium is stimulated to emit light by an electric current or high-frequency oscillator.

• Lithium Carbonate

  a lithium salt, classified as a mood-stabilizing agent. lithium ion alters the metabolism of biogenic monoamines in the central nervous system, and affects multiple neurotransmission systems.

• Meteoroids

  any solid objects moving in interplanetary space that are smaller than a planet or asteroid but larger than a molecule. meteorites are any meteoroid that has fallen to a planetary surface. (from mcgraw-hill dictionary of scientific and technical terms, 4th ed)

• Nanotubes, Carbon

  nanometer-sized tubes composed mainly of carbon. such nanotubes are used as probes for high-resolution structural and chemical imaging of biomolecules with atomic force microscopy.

• Photosynthesis

  the synthesis by organisms of organic chemical compounds, especially carbohydrates, from carbon dioxide using energy obtained from light rather than from the oxidation of chemical compounds. photosynthesis comprises two separate processes: the light reactions and the dark reactions. in higher plants; green algae; and cyanobacteria; nadph and atp formed by the light reactions drive the dark reactions which result in the fixation of carbon dioxide. (from oxford dictionary of biochemistry and molecular biology, 2001)

• Pregnenolone Carbonitrile

  a catatoxic steroid and microsomal enzyme inducer having significant effects on the induction of cytochrome p450. it has also demonstrated the potential for protective capability against acetaminophen-induced liver damage.

• Protein Carbonylation

  the appearance of carbonyl groups (such as aldehyde or ketone groups) in proteins as the result of several oxidative modification reactions. it is a standard marker for oxidative stress. carbonylated proteins tend to be more hydrophobic and resistant to proteolysis.

• Radiometric Dating

  techniques used to determine the age of materials, based on the content and half-lives of the radioactive isotopes they contain.

• Sevelamer

  a polymeric amine that binds phosphate and is used to treat hyperphosphatemia in patients with kidney disease.

• Sodium Bicarbonate

  a white, crystalline powder that is commonly used as a ph buffering agent, an electrolyte replenisher, systemic alkalizer and in topical cleansing solutions.

• Soot

  a dark powdery deposit of unburned fuel residues, composed mainly of amorphous carbon and some hydrocarbons, that accumulates in chimneys, automobile mufflers and other surfaces exposed to smoke. it is the product of incomplete combustion of carbon-rich organic fuels in low oxygen conditions. it is sometimes called lampblack or carbon black and is used in ink, in rubber tires, and to prepare carbon nanotubes.

• Trioses

  monosaccharide molecules that contain a three carbon backbone.

Substances in the Table of Drugs and Chemicals that reference this code family. Always confirm in the Tabular List before coding.

Poisoning

A poison is any substance that is harmful to your body. You might swallow it, inhale it, inject it, or absorb it through your skin. Any substance can be poisonous if too much is taken. Poisons can include:

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.