ICD-10-CM Tag List · Table of Drugs · FY 2026 287 Codes

2026 Accidental Poisoning ICD-10-CM Codes ICD-10-CM

The FY 2026 dataset contains 287 accidental poisoning codes across 30 code blocks. Accidental poisoning codes document unintentional poisonings and overdoses from incorrect use of drugs, chemicals, and other substances. Each code below lists the substances that map to it in the Table of Drugs and Chemicals, so this page can be searched by drug name.

✓ Built from the official CMS FY 2026 datasetEffective Oct 1, 2025 – Sep 30, 2026
287
Codes
30
Code Blocks
0
Billable
FY 2026
Dataset

Coding Guidance

Verify that documentation does not support intent. If intent cannot be established, the undetermined intent codes apply. No additional external cause code is required.

ICD-10-CM

All Accidental Poisoning Codes 287 codes · searchable by substance

287 of 287 shown

Poisoning by, adverse effect of and underdosing of systemic antibiotics T36 · 11 codes

  • T36.0X1 Poisoning by penicillins, accidental (unintentional)Non-billable header
  • T36.1X1 Poisoning by cephalosporins and other beta-lactam antibiotics, accidental (unintentional)Non-billable header
  • T36.2X1 Poisoning by chloramphenicol group, accidental (unintentional)Non-billable header
  • T36.3X1 Poisoning by macrolides, accidental (unintentional)Non-billable header
  • T36.4X1 Poisoning by tetracyclines, accidental (unintentional)Non-billable header
  • T36.5X1 Poisoning by aminoglycosides, accidental (unintentional)Non-billable header
  • T36.6X1 Poisoning by rifampicins, accidental (unintentional)Non-billable header
  • T36.7X1 Poisoning by antifungal antibiotics, systemically used, accidental (unintentional)Non-billable header
  • T36.8X1 Poisoning by other systemic antibiotics, accidental (unintentional)Non-billable header
  • T36.91 Poisoning by unspecified systemic antibiotic, accidental (unintentional)Non-billable header
  • T36.AX1 Poisoning by fluoroquinolone antibiotics, accidental (unintentional)Non-billable header

Poisoning by, adverse effect of and underdosing of other systemic anti-infectives and antiparasitics T37 · 8 codes

  • T37.0X1 Poisoning by sulfonamides, accidental (unintentional)Non-billable header
  • T37.1X1 Poisoning by antimycobacterial drugs, accidental (unintentional)Non-billable header
  • T37.2X1 Poisoning by antimalarials and drugs acting on other blood protozoa, accidental (unintentional)Non-billable header
  • T37.3X1 Poisoning by other antiprotozoal drugs, accidental (unintentional)Non-billable header
  • T37.4X1 Poisoning by anthelminthics, accidental (unintentional)Non-billable header
  • T37.5X1 Poisoning by antiviral drugs, accidental (unintentional)Non-billable header
  • T37.8X1 Poisoning by other specified systemic anti-infectives and antiparasitics, accidental (unintentional)Non-billable header
  • T37.91 Poisoning by unspecified systemic anti-infective and antiparasitics, accidental (unintentional)Non-billable header

Poisoning by, adverse effect of and underdosing of hormones and their synthetic substitutes and antagonists, not elsewhere classified T38 · 13 codes

  • T38.0X1 Poisoning by glucocorticoids and synthetic analogues, accidental (unintentional)Non-billable header
  • T38.1X1 Poisoning by thyroid hormones and substitutes, accidental (unintentional)Non-billable header
  • T38.2X1 Poisoning by antithyroid drugs, accidental (unintentional)Non-billable header
  • T38.3X1 Poisoning by insulin and oral hypoglycemic [antidiabetic] drugs, accidental (unintentional)Non-billable header
  • T38.4X1 Poisoning by oral contraceptives, accidental (unintentional)Non-billable header
  • T38.5X1 Poisoning by other estrogens and progestogens, accidental (unintentional)Non-billable header
  • T38.6X1 Poisoning by antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified, accidental (unintentional)Non-billable header
  • T38.7X1 Poisoning by androgens and anabolic congeners, accidental (unintentional)Non-billable header
  • T38.801 Poisoning by unspecified hormones and synthetic substitutes, accidental (unintentional)Non-billable header
  • T38.811 Poisoning by anterior pituitary [adenohypophyseal] hormones, accidental (unintentional)Non-billable header
  • T38.891 Poisoning by other hormones and synthetic substitutes, accidental (unintentional)Non-billable header
  • T38.901 Poisoning by unspecified hormone antagonists, accidental (unintentional)Non-billable header
  • T38.991 Poisoning by other hormone antagonists, accidental (unintentional)Non-billable header

Poisoning by, adverse effect of and underdosing of nonopioid analgesics, antipyretics and antirheumatics T39 · 9 codes

  • T39.011 Poisoning by aspirin, accidental (unintentional)Non-billable header
  • T39.091 Poisoning by salicylates, accidental (unintentional)Non-billable header
  • T39.1X1 Poisoning by 4-Aminophenol derivatives, accidental (unintentional)Non-billable header
  • T39.2X1 Poisoning by pyrazolone derivatives, accidental (unintentional)Non-billable header
  • T39.311 Poisoning by propionic acid derivatives, accidental (unintentional)Non-billable header
  • T39.391 Poisoning by other nonsteroidal anti-inflammatory drugs [NSAID], accidental (unintentional)Non-billable header
  • T39.4X1 Poisoning by antirheumatics, not elsewhere classified, accidental (unintentional)Non-billable header
  • T39.8X1 Poisoning by other nonopioid analgesics and antipyretics, not elsewhere classified, accidental (unintentional)Non-billable header
  • T39.91 Poisoning by unspecified nonopioid analgesic, antipyretic and antirheumatic, accidental (unintentional)Non-billable header

Poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens] T40 · 14 codes

  • T40.0X1 Poisoning by opium, accidental (unintentional)Non-billable header
  • T40.1X1 Poisoning by heroin, accidental (unintentional)Non-billable header
  • T40.2X1 Poisoning by other opioids, accidental (unintentional)Non-billable header
  • T40.3X1 Poisoning by methadone, accidental (unintentional)Non-billable header
  • T40.411 Poisoning by fentanyl or fentanyl analogs, accidental (unintentional)Non-billable header
  • T40.421 Poisoning by tramadol, accidental (unintentional)Non-billable header
  • T40.491 Poisoning by other synthetic narcotics, accidental (unintentional)Non-billable header
  • T40.5X1 Poisoning by cocaine, accidental (unintentional)Non-billable header
  • T40.601 Poisoning by unspecified narcotics, accidental (unintentional)Non-billable header
  • T40.711 Poisoning by cannabis, accidental (unintentional)Non-billable header
  • T40.721 Poisoning by synthetic cannabinoids, accidental (unintentional)Non-billable header
  • T40.8X1 Poisoning by lysergide [LSD], accidental (unintentional)Non-billable header
  • T40.901 Poisoning by unspecified psychodysleptics [hallucinogens], accidental (unintentional)Non-billable header
  • T40.991 Poisoning by other psychodysleptics [hallucinogens], accidental (unintentional)Non-billable header

Poisoning by, adverse effect of and underdosing of anesthetics and therapeutic gases T41 · 7 codes

  • T41.0X1 Poisoning by inhaled anesthetics, accidental (unintentional)Non-billable header
  • T41.1X1 Poisoning by intravenous anesthetics, accidental (unintentional)Non-billable header
  • T41.201 Poisoning by unspecified general anesthetics, accidental (unintentional)Non-billable header
  • T41.291 Poisoning by other general anesthetics, accidental (unintentional)Non-billable header
  • T41.3X1 Poisoning by local anesthetics, accidental (unintentional)Non-billable header
  • T41.41 Poisoning by unspecified anesthetic, accidental (unintentional)Non-billable header
  • T41.5X1 Poisoning by therapeutic gases, accidental (unintentional)Non-billable header

Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs T42 · 8 codes

  • T42.0X1 Poisoning by hydantoin derivatives, accidental (unintentional)Non-billable header
  • T42.1X1 Poisoning by iminostilbenes, accidental (unintentional)Non-billable header
  • T42.2X1 Poisoning by succinimides and oxazolidinediones, accidental (unintentional)Non-billable header
  • T42.3X1 Poisoning by barbiturates, accidental (unintentional)Non-billable header
  • T42.4X1 Poisoning by benzodiazepines, accidental (unintentional)Non-billable header
  • T42.6X1 Poisoning by other antiepileptic and sedative-hypnotic drugs, accidental (unintentional)Non-billable header
  • T42.71 Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, accidental (unintentional)Non-billable header
  • T42.8X1 Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, accidental (unintentional)Non-billable header

Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified T43 · 20 codes

  • T43.011 Poisoning by tricyclic antidepressants, accidental (unintentional)Non-billable header
  • T43.021 Poisoning by tetracyclic antidepressants, accidental (unintentional)Non-billable header
  • T43.1X1 Poisoning by monoamine-oxidase-inhibitor antidepressants, accidental (unintentional)Non-billable header
  • T43.201 Poisoning by unspecified antidepressants, accidental (unintentional)Non-billable header
  • T43.211 Poisoning by selective serotonin and norepinephrine reuptake inhibitors, accidental (unintentional)Non-billable header
  • T43.221 Poisoning by selective serotonin reuptake inhibitors, accidental (unintentional)Non-billable header
  • T43.291 Poisoning by other antidepressants, accidental (unintentional)Non-billable header
  • T43.3X1 Poisoning by phenothiazine antipsychotics and neuroleptics, accidental (unintentional)Non-billable header
  • T43.4X1 Poisoning by butyrophenone and thiothixene neuroleptics, accidental (unintentional)Non-billable header
  • T43.501 Poisoning by unspecified antipsychotics and neuroleptics, accidental (unintentional)Non-billable header
  • T43.591 Poisoning by other antipsychotics and neuroleptics, accidental (unintentional)Non-billable header
  • T43.601 Poisoning by unspecified psychostimulants, accidental (unintentional)Non-billable header
  • T43.611 Poisoning by caffeine, accidental (unintentional)Non-billable header
  • T43.621 Poisoning by amphetamines, accidental (unintentional)Non-billable header
  • T43.631 Poisoning by methylphenidate, accidental (unintentional)Non-billable header
  • T43.641 Poisoning by ecstasy, accidental (unintentional)Non-billable header
  • T43.651 Poisoning by methamphetamines accidental (unintentional)Non-billable header
  • T43.691 Poisoning by other psychostimulants, accidental (unintentional)Non-billable header
  • T43.8X1 Poisoning by other psychotropic drugs, accidental (unintentional)Non-billable header
  • T43.91 Poisoning by unspecified psychotropic drug, accidental (unintentional)Non-billable header

Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system T44 · 11 codes

  • T44.0X1 Poisoning by anticholinesterase agents, accidental (unintentional)Non-billable header
  • T44.1X1 Poisoning by other parasympathomimetics [cholinergics], accidental (unintentional)Non-billable header
  • T44.2X1 Poisoning by ganglionic blocking drugs, accidental (unintentional)Non-billable header
  • T44.3X1 Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, accidental (unintentional)Non-billable header
  • T44.4X1 Poisoning by predominantly alpha-adrenoreceptor agonists, accidental (unintentional)Non-billable header
  • T44.5X1 Poisoning by predominantly beta-adrenoreceptor agonists, accidental (unintentional)Non-billable header
  • T44.6X1 Poisoning by alpha-adrenoreceptor antagonists, accidental (unintentional)Non-billable header
  • T44.7X1 Poisoning by beta-adrenoreceptor antagonists, accidental (unintentional)Non-billable header
  • T44.8X1 Poisoning by centrally-acting and adrenergic-neuron-blocking agents, accidental (unintentional)Non-billable header
  • T44.901 Poisoning by unspecified drugs primarily affecting the autonomic nervous system, accidental (unintentional)Non-billable header
  • T44.991 Poisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional)Non-billable header

Poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classified T45 · 15 codes

  • T45.0X1 Poisoning by antiallergic and antiemetic drugs, accidental (unintentional)Non-billable header
  • T45.1X1 Poisoning by antineoplastic and immunosuppressive drugs, accidental (unintentional)Non-billable header
  • T45.2X1 Poisoning by vitamins, accidental (unintentional)Non-billable header
  • T45.3X1 Poisoning by enzymes, accidental (unintentional)Non-billable header
  • T45.4X1 Poisoning by iron and its compounds, accidental (unintentional)Non-billable header
  • T45.511 Poisoning by anticoagulants, accidental (unintentional)Non-billable header
  • T45.521 Poisoning by antithrombotic drugs, accidental (unintentional)Non-billable header
  • T45.601 Poisoning by unspecified fibrinolysis-affecting drugs, accidental (unintentional)Non-billable header
  • T45.611 Poisoning by thrombolytic drug, accidental (unintentional)Non-billable header
  • T45.621 Poisoning by hemostatic drug, accidental (unintentional)Non-billable header
  • T45.691 Poisoning by other fibrinolysis-affecting drugs, accidental (unintentional)Non-billable header
  • T45.7X1 Poisoning by anticoagulant antagonists, vitamin K and other coagulants, accidental (unintentional)Non-billable header
  • T45.8X1 Poisoning by other primarily systemic and hematological agents, accidental (unintentional)Non-billable header
  • T45.91 Poisoning by unspecified primarily systemic and hematological agent, accidental (unintentional)Non-billable header
  • T45.AX1 Poisoning by immune checkpoint inhibitors and immunostimulant drugs, accidental (unintentional)Non-billable header

Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system T46 · 11 codes

  • T46.0X1 Poisoning by cardiac-stimulant glycosides and drugs of similar action, accidental (unintentional)Non-billable header
  • T46.1X1 Poisoning by calcium-channel blockers, accidental (unintentional)Non-billable header
  • T46.2X1 Poisoning by other antidysrhythmic drugs, accidental (unintentional)Non-billable header
  • T46.3X1 Poisoning by coronary vasodilators, accidental (unintentional)Non-billable header
  • T46.4X1 Poisoning by angiotensin-converting-enzyme inhibitors, accidental (unintentional)Non-billable header
  • T46.5X1 Poisoning by other antihypertensive drugs, accidental (unintentional)Non-billable header
  • T46.6X1 Poisoning by antihyperlipidemic and antiarteriosclerotic drugs, accidental (unintentional)Non-billable header
  • T46.7X1 Poisoning by peripheral vasodilators, accidental (unintentional)Non-billable header
  • T46.8X1 Poisoning by antivaricose drugs, including sclerosing agents, accidental (unintentional)Non-billable header
  • T46.901 Poisoning by unspecified agents primarily affecting the cardiovascular system, accidental (unintentional)Non-billable header
  • T46.991 Poisoning by other agents primarily affecting the cardiovascular system, accidental (unintentional)Non-billable header

Poisoning by, adverse effect of and underdosing of agents primarily affecting the gastrointestinal system T47 · 10 codes

  • T47.0X1 Poisoning by histamine H2-receptor blockers, accidental (unintentional)Non-billable header
  • T47.1X1 Poisoning by other antacids and anti-gastric-secretion drugs, accidental (unintentional)Non-billable header
  • T47.2X1 Poisoning by stimulant laxatives, accidental (unintentional)Non-billable header
  • T47.3X1 Poisoning by saline and osmotic laxatives, accidental (unintentional)Non-billable header
  • T47.4X1 Poisoning by other laxatives, accidental (unintentional)Non-billable header
  • T47.5X1 Poisoning by digestants, accidental (unintentional)Non-billable header
  • T47.6X1 Poisoning by antidiarrheal drugs, accidental (unintentional)Non-billable header
  • T47.7X1 Poisoning by emetics, accidental (unintentional)Non-billable header
  • T47.8X1 Poisoning by other agents primarily affecting gastrointestinal system, accidental (unintentional)Non-billable header
  • T47.91 Poisoning by unspecified agents primarily affecting the gastrointestinal system, accidental (unintentional)Non-billable header

Poisoning by, adverse effect of and underdosing of agents primarily acting on smooth and skeletal muscles and the respiratory system T48 · 9 codes

  • T48.0X1 Poisoning by oxytocic drugs, accidental (unintentional)Non-billable header
  • T48.1X1 Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], accidental (unintentional)Non-billable header
  • T48.201 Poisoning by unspecified drugs acting on muscles, accidental (unintentional)Non-billable header
  • T48.291 Poisoning by other drugs acting on muscles, accidental (unintentional)Non-billable header
  • T48.3X1 Poisoning by antitussives, accidental (unintentional)Non-billable header
  • T48.4X1 Poisoning by expectorants, accidental (unintentional)Non-billable header
  • T48.5X1 Poisoning by other anti-common-cold drugs, accidental (unintentional)Non-billable header
  • T48.6X1 Poisoning by antiasthmatics, accidental (unintentional)Non-billable header
  • T48.901 Poisoning by unspecified agents primarily acting on the respiratory system, accidental (unintentional)Non-billable header

Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs T49 · 10 codes

  • T49.0X1 Poisoning by local antifungal, anti-infective and anti-inflammatory drugs, accidental (unintentional)Non-billable header
  • T49.1X1 Poisoning by antipruritics, accidental (unintentional)Non-billable header
  • T49.2X1 Poisoning by local astringents and local detergents, accidental (unintentional)Non-billable header
  • T49.3X1 Poisoning by emollients, demulcents and protectants, accidental (unintentional)Non-billable header
  • T49.4X1 Poisoning by keratolytics, keratoplastics, and other hair treatment drugs and preparations, accidental (unintentional)Non-billable header
  • T49.5X1 Poisoning by ophthalmological drugs and preparations, accidental (unintentional)Non-billable header
  • T49.6X1 Poisoning by otorhinolaryngological drugs and preparations, accidental (unintentional)Non-billable header
  • T49.7X1 Poisoning by dental drugs, topically applied, accidental (unintentional)Non-billable header
  • T49.8X1 Poisoning by other topical agents, accidental (unintentional)Non-billable header
  • T49.91 Poisoning by unspecified topical agent, accidental (unintentional)Non-billable header

Poisoning by, adverse effect of and underdosing of diuretics and other and unspecified drugs, medicaments and biological substances T50 · 18 codes

  • T50.0X1 Poisoning by mineralocorticoids and their antagonists, accidental (unintentional)Non-billable header
  • T50.1X1 Poisoning by loop [high-ceiling] diuretics, accidental (unintentional)Non-billable header
  • T50.2X1 Poisoning by carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics, accidental (unintentional)Non-billable header
  • T50.3X1 Poisoning by electrolytic, caloric and water-balance agents, accidental (unintentional)Non-billable header
  • T50.4X1 Poisoning by drugs affecting uric acid metabolism, accidental (unintentional)Non-billable header
  • T50.5X1 Poisoning by appetite depressants, accidental (unintentional)Non-billable header
  • T50.6X1 Poisoning by antidotes and chelating agents, accidental (unintentional)Non-billable header
  • T50.7X1 Poisoning by analeptics and opioid receptor antagonists, accidental (unintentional)Non-billable header
  • T50.8X1 Poisoning by diagnostic agents, accidental (unintentional)Non-billable header
  • T50.901 Poisoning by unspecified drugs, medicaments and biological substances, accidental (unintentional)Non-billable header
  • T50.911 Poisoning by multiple unspecified drugs, medicaments and biological substances, accidental (unintentional)Non-billable header
  • T50.991 Poisoning by other drugs, medicaments and biological substances, accidental (unintentional)Non-billable header
  • T50.A21 Poisoning by mixed bacterial vaccines without a pertussis component, accidental (unintentional)Non-billable header
  • T50.A91 Poisoning by other bacterial vaccines, accidental (unintentional)Non-billable header
  • T50.B11 Poisoning by smallpox vaccines, accidental (unintentional)Non-billable header
  • T50.B91 Poisoning by other viral vaccines, accidental (unintentional)Non-billable header
  • T50.Z11 Poisoning by immunoglobulin, accidental (unintentional)Non-billable header
  • T50.Z91 Poisoning by other vaccines and biological substances, accidental (unintentional)Non-billable header

Toxic effect of alcohol T51 · 6 codes

  • T51.0X1 Toxic effect of ethanol, accidental (unintentional)Non-billable header
  • T51.1X1 Toxic effect of methanol, accidental (unintentional)Non-billable header
  • T51.2X1 Toxic effect of 2-Propanol, accidental (unintentional)Non-billable header
  • T51.3X1 Toxic effect of fusel oil, accidental (unintentional)Non-billable header
  • T51.8X1 Toxic effect of other alcohols, accidental (unintentional)Non-billable header
  • T51.91 Toxic effect of unspecified alcohol, accidental (unintentional)Non-billable header

Toxic effect of organic solvents T52 · 7 codes

  • T52.0X1 Toxic effect of petroleum products, accidental (unintentional)Non-billable header
  • T52.1X1 Toxic effect of benzene, accidental (unintentional)Non-billable header
  • T52.2X1 Toxic effect of homologues of benzene, accidental (unintentional)Non-billable header
  • T52.3X1 Toxic effect of glycols, accidental (unintentional)Non-billable header
  • T52.4X1 Toxic effect of ketones, accidental (unintentional)Non-billable header
  • T52.8X1 Toxic effect of other organic solvents, accidental (unintentional)Non-billable header
  • T52.91 Toxic effect of unspecified organic solvent, accidental (unintentional)Non-billable header

Toxic effect of halogen derivatives of aliphatic and aromatic hydrocarbons T53 · 7 codes

  • T53.1X1 Toxic effect of chloroform, accidental (unintentional)Non-billable header
  • T53.2X1 Toxic effect of trichloroethylene, accidental (unintentional)Non-billable header
  • T53.3X1 Toxic effect of tetrachloroethylene, accidental (unintentional)Non-billable header
  • T53.4X1 Toxic effect of dichloromethane, accidental (unintentional)Non-billable header
  • T53.5X1 Toxic effect of chlorofluorocarbons, accidental (unintentional)Non-billable header
  • T53.6X1 Toxic effect of other halogen derivatives of aliphatic hydrocarbons, accidental (unintentional)Non-billable header
  • T53.7X1 Toxic effect of other halogen derivatives of aromatic hydrocarbons, accidental (unintentional)Non-billable header

Toxic effect of corrosive substances T54 · 5 codes

  • T54.0X1 Toxic effect of phenol and phenol homologues, accidental (unintentional)Non-billable header
  • T54.1X1 Toxic effect of other corrosive organic compounds, accidental (unintentional)Non-billable header
  • T54.2X1 Toxic effect of corrosive acids and acid-like substances, accidental (unintentional)Non-billable header
  • T54.3X1 Toxic effect of corrosive alkalis and alkali-like substances, accidental (unintentional)Non-billable header
  • T54.91 Toxic effect of unspecified corrosive substance, accidental (unintentional)Non-billable header

Toxic effect of soaps and detergents T55 · 1 codes

  • T55.0X1 Toxic effect of soaps, accidental (unintentional)Non-billable header

Toxic effect of metals T56 · 12 codes

  • T56.0X1 Toxic effect of lead and its compounds, accidental (unintentional)Non-billable header
  • T56.1X1 Toxic effect of mercury and its compounds, accidental (unintentional)Non-billable header
  • T56.2X1 Toxic effect of chromium and its compounds, accidental (unintentional)Non-billable header
  • T56.3X1 Toxic effect of cadmium and its compounds, accidental (unintentional)Non-billable header
  • T56.4X1 Toxic effect of copper and its compounds, accidental (unintentional)Non-billable header
  • T56.5X1 Toxic effect of zinc and its compounds, accidental (unintentional)Non-billable header
  • T56.6X1 Toxic effect of tin and its compounds, accidental (unintentional)Non-billable header
  • T56.7X1 Toxic effect of beryllium and its compounds, accidental (unintentional)Non-billable header
  • T56.811 Toxic effect of thallium, accidental (unintentional)Non-billable header
  • T56.821 Toxic effect of gadolinium, accidental (unintentional)Non-billable header
  • T56.891 Toxic effect of other metals, accidental (unintentional)Non-billable header
  • T56.91 Toxic effect of unspecified metal, accidental (unintentional)Non-billable header

Toxic effect of other inorganic substances T57 · 6 codes

  • T57.0X1 Toxic effect of arsenic and its compounds, accidental (unintentional)Non-billable header
  • T57.1X1 Toxic effect of phosphorus and its compounds, accidental (unintentional)Non-billable header
  • T57.2X1 Toxic effect of manganese and its compounds, accidental (unintentional)Non-billable header
  • T57.3X1 Toxic effect of hydrogen cyanide, accidental (unintentional)Non-billable header
  • T57.8X1 Toxic effect of other specified inorganic substances, accidental (unintentional)Non-billable header
  • T57.91 Toxic effect of unspecified inorganic substance, accidental (unintentional)Non-billable header

Toxic effect of carbon monoxide T58 · 4 codes

  • T58.01 Toxic effect of carbon monoxide from motor vehicle exhaust, accidental (unintentional)Non-billable header
  • T58.11 Toxic effect of carbon monoxide from utility gas, accidental (unintentional)Non-billable header
  • T58.2X1 Toxic effect of carbon monoxide from incomplete combustion of other domestic fuels, accidental (unintentional)Non-billable header
  • T58.8X1 Toxic effect of carbon monoxide from other source, accidental (unintentional)Non-billable header

Toxic effect of other gases, fumes and vapors T59 · 11 codes

  • T59.0X1 Toxic effect of nitrogen oxides, accidental (unintentional)Non-billable header
  • T59.1X1 Toxic effect of sulfur dioxide, accidental (unintentional)Non-billable header
  • T59.2X1 Toxic effect of formaldehyde, accidental (unintentional)Non-billable header
  • T59.3X1 Toxic effect of lacrimogenic gas, accidental (unintentional)Non-billable header
  • T59.4X1 Toxic effect of chlorine gas, accidental (unintentional)Non-billable header
  • T59.5X1 Toxic effect of fluorine gas and hydrogen fluoride, accidental (unintentional)Non-billable header
  • T59.6X1 Toxic effect of hydrogen sulfide, accidental (unintentional)Non-billable header
  • T59.7X1 Toxic effect of carbon dioxide, accidental (unintentional)Non-billable header
  • T59.811 Toxic effect of smoke, accidental (unintentional)Non-billable header
  • T59.891 Toxic effect of other specified gases, fumes and vapors, accidental (unintentional)Non-billable header
  • T59.91 Toxic effect of unspecified gases, fumes and vapors, accidental (unintentional)Non-billable header

Toxic effect of pesticides T60 · 7 codes

  • T60.0X1 Toxic effect of organophosphate and carbamate insecticides, accidental (unintentional)Non-billable header
  • T60.1X1 Toxic effect of halogenated insecticides, accidental (unintentional)Non-billable header
  • T60.2X1 Toxic effect of other insecticides, accidental (unintentional)Non-billable header
  • T60.3X1 Toxic effect of herbicides and fungicides, accidental (unintentional)Non-billable header
  • T60.4X1 Toxic effect of rodenticides, accidental (unintentional)Non-billable header
  • T60.8X1 Toxic effect of other pesticides, accidental (unintentional)Non-billable header
  • T60.91 Toxic effect of unspecified pesticide, accidental (unintentional)Non-billable header

Toxic effect of noxious substances eaten as seafood T61 · 5 codes

  • T61.01 Ciguatera fish poisoning, accidental (unintentional)Non-billable header
  • T61.11 Scombroid fish poisoning, accidental (unintentional)Non-billable header
  • T61.771 Other fish poisoning, accidental (unintentional)Non-billable header
  • T61.781 Other shellfish poisoning, accidental (unintentional)Non-billable header
  • T61.91 Toxic effect of unspecified seafood, accidental (unintentional)Non-billable header

Toxic effect of other noxious substances eaten as food T62 · 5 codes

  • T62.0X1 Toxic effect of ingested mushrooms, accidental (unintentional)Non-billable header
  • T62.1X1 Toxic effect of ingested berries, accidental (unintentional)Non-billable header
  • T62.2X1 Toxic effect of other ingested (parts of) plant(s), accidental (unintentional)Non-billable header
  • T62.8X1 Toxic effect of other specified noxious substances eaten as food, accidental (unintentional)Non-billable header
  • T62.91 Toxic effect of unspecified noxious substance eaten as food, accidental (unintentional)Non-billable header

Toxic effect of contact with venomous animals and plants T63 · 21 codes

  • T63.001 Toxic effect of unspecified snake venom, accidental (unintentional)Non-billable header
  • T63.011 Toxic effect of rattlesnake venom, accidental (unintentional)Non-billable header
  • T63.041 Toxic effect of cobra venom, accidental (unintentional)Non-billable header
  • T63.061 Toxic effect of venom of other North and South American snake, accidental (unintentional)Non-billable header
  • T63.091 Toxic effect of venom of other snake, accidental (unintentional)Non-billable header
  • T63.111 Toxic effect of venom of gila monster, accidental (unintentional)Non-billable header
  • T63.121 Toxic effect of venom of other venomous lizard, accidental (unintentional)Non-billable header
  • T63.321 Toxic effect of venom of tarantula, accidental (unintentional)Non-billable header
  • T63.331 Toxic effect of venom of brown recluse spider, accidental (unintentional)Non-billable header
  • T63.391 Toxic effect of venom of other spider, accidental (unintentional)Non-billable header
  • T63.411 Toxic effect of venom of centipedes and venomous millipedes, accidental (unintentional)Non-billable header
  • T63.421 Toxic effect of venom of ants, accidental (unintentional)Non-billable header
  • T63.431 Toxic effect of venom of caterpillars, accidental (unintentional)Non-billable header
  • T63.441 Toxic effect of venom of bees, accidental (unintentional)Non-billable header
  • T63.451 Toxic effect of venom of hornets, accidental (unintentional)Non-billable header
  • T63.461 Toxic effect of venom of wasps, accidental (unintentional)Non-billable header
  • T63.481 Toxic effect of venom of other arthropod, accidental (unintentional)Non-billable header
  • T63.621 Toxic effect of contact with other jellyfish, accidental (unintentional)Non-billable header
  • T63.631 Toxic effect of contact with sea anemone, accidental (unintentional)Non-billable header
  • T63.691 Toxic effect of contact with other venomous marine animals, accidental (unintentional)Non-billable header
  • T63.91 Toxic effect of contact with unspecified venomous animal, accidental (unintentional)Non-billable header

Toxic effect of aflatoxin and other mycotoxin food contaminants T64 · 2 codes

  • T64.01 Toxic effect of aflatoxin, accidental (unintentional)Non-billable header
  • T64.81 Toxic effect of other mycotoxin food contaminants, accidental (unintentional)Non-billable header

Toxic effect of other and unspecified substances T65 · 14 codes

  • T65.0X1 Toxic effect of cyanides, accidental (unintentional)Non-billable header
  • T65.1X1 Toxic effect of strychnine and its salts, accidental (unintentional)Non-billable header
  • T65.211 Toxic effect of chewing tobacco, accidental (unintentional)Non-billable header
  • T65.221 Toxic effect of tobacco cigarettes, accidental (unintentional)Non-billable header
  • T65.291 Toxic effect of other tobacco and nicotine, accidental (unintentional)Non-billable header
  • T65.3X1 Toxic effect of nitroderivatives and aminoderivatives of benzene and its homologues, accidental (unintentional)Non-billable header
  • T65.4X1 Toxic effect of carbon disulfide, accidental (unintentional)Non-billable header
  • T65.6X1 Toxic effect of paints and dyes, not elsewhere classified, accidental (unintentional)Non-billable header
  • T65.811 Toxic effect of latex, accidental (unintentional)Non-billable header
  • T65.821 Toxic effect of harmful algae and algae toxins, accidental (unintentional)Non-billable header
  • T65.831 Toxic effect of fiberglass, accidental (unintentional)Non-billable header
  • T65.841 Toxic effect of xylazine, accidental (unintentional)Non-billable header
  • T65.891 Toxic effect of other specified substances, accidental (unintentional)Non-billable header
  • T65.91 Toxic effect of unspecified substance, accidental (unintentional)Non-billable header

The info icon lists every substance from the table that maps to the code. The filter above searches those substances too.

Questions About This Page

How do I find the right code for a specific drug?

Type the substance into the filter above. Every code on this page carries its full substance list from the Table of Drugs and Chemicals. For the complete six-column table, use the Table of Drugs and Chemicals.

Do these codes need an external cause code?

No. Poisoning, adverse effect, and underdosing codes from the T36 to T65 range carry the intent inside the code itself, so no additional external cause code is reported with them.

What 7th character do these codes take?

A for the initial encounter during active treatment, D for subsequent encounters during recovery, and S for sequela when coding late effects.

How many accidental poisoning codes are there?

The FY 2026 dataset contains 287 accidental poisoning codes across 30 code blocks.

Related References

Source: official CMS FY 2026 ICD-10-CM release, effective October 1, 2025 through September 30, 2026.