2024 ICD-10-CM Table of Drugs and Chemicals starting with letter I

The 2024 Table of Drugs and Chemicals contains a classification of drugs, industrial solvents, corrosive gases, noxious plants, pesticides, and other toxic agents. Each substance in the table is assigned a code according to the poisoning classification and external causes of adverse effects. Use as many codes as necessary to describe all reported drugs, medicinal or chemical substances. Browse Table of Drugs and Chemicals by alphabetical order:

Substance Poisoning
Accidental
(unintentional)
Poisoning
Accidental
self-harm
Poisoning
Assault
Poisoning
Undetermined
Adverse
effect
Underdosing
IbacitabineT37.5X1T37.5X2T37.5X3T37.5X4T37.5X5T37.5X6
IbopamineT44.991T44.992T44.993T44.994T44.995T44.996
IbufenacT39.311T39.312T39.313T39.314T39.315T39.316
IbuprofenT39.311T39.312T39.313T39.314T39.315T39.316
IbuproxamT39.311T39.312T39.313T39.314T39.315T39.316
IbuterolT48.6X1T48.6X2T48.6X3T48.6X4T48.6X5T48.6X6
IchthammolT49.0X1T49.0X2T49.0X3T49.0X4T49.0X5T49.0X6
IchthyolT49.4X1T49.4X2T49.4X3T49.4X4T49.4X5T49.4X6
IdarubicinT45.1X1T45.1X2T45.1X3T45.1X4T45.1X5T45.1X6
IdrocilamideT42.8X1T42.8X2T42.8X3T42.8X4T42.8X5T42.8X6
IfenprodilT46.7X1T46.7X2T46.7X3T46.7X4T46.7X5T46.7X6
IfosfamideT45.1X1T45.1X2T45.1X3T45.1X4T45.1X5T45.1X6
IletinT38.3X1T38.3X2T38.3X3T38.3X4T38.3X5T38.3X6
IlexT62.2X1T62.2X2T62.2X3T62.2X4  
Illuminating gas (after combustion)T58.11T58.12T58.13T58.14  
Illuminating gas (after combustion)
  »prior to combustion
T58.11T58.12T58.13T58.14  
IlopanT45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
IloprostT46.7X1T46.7X2T46.7X3T46.7X4T46.7X5T46.7X6
IlotycinT36.3X1T36.3X2T36.3X3T36.3X4T36.3X5T36.3X6
Ilotycin
  »ophthalmic preparation
T36.3X1T36.3X2T36.3X3T36.3X4T36.3X5T36.3X6
Ilotycin
  »topical NEC
T36.3X1T36.3X2T36.3X3T36.3X4T36.3X5T36.3X6
Imidazole-4-carboxamideT45.1X1T45.1X2T45.1X3T45.1X4T45.1X5T45.1X6
IminostilbeneT42.1X1T42.1X2T42.1X3T42.1X4T42.1X5T42.1X6
ImipenemT36.0X1T36.0X2T36.0X3T36.0X4T36.0X5T36.0X6
ImipramineT43.011T43.012T43.013T43.014T43.015T43.016
ImmuglobinT50.Z11T50.Z12T50.Z13T50.Z14T50.Z15T50.Z16
ImmuneT50.Z11T50.Z12T50.Z13T50.Z14T50.Z15T50.Z16
Immune
  »globulin
T50.Z11T50.Z12T50.Z13T50.Z14T50.Z15T50.Z16
Immune
  »serum globulin
T50.Z11T50.Z12T50.Z13T50.Z14T50.Z15T50.Z16
Immunoglobin human (intravenous) (normal)T50.Z11T50.Z12T50.Z13T50.Z14T50.Z15T50.Z16
Immunoglobin human (intravenous) (normal)
  »unmodified
T50.Z11T50.Z12T50.Z13T50.Z14T50.Z15T50.Z16
Immunosuppressive drugT45.1X1T45.1X2T45.1X3T45.1X4T45.1X5T45.1X6
Immu-tetanusT50.Z11T50.Z12T50.Z13T50.Z14T50.Z15T50.Z16
IndalpineT43.221T43.222T43.223T43.224T43.225T43.226
IndanazolineT48.5X1T48.5X2T48.5X3T48.5X4T48.5X5T48.5X6
Indandione (derivatives)T45.511T45.512T45.513T45.514T45.515T45.516
IndapamideT46.5X1T46.5X2T46.5X3T46.5X4T46.5X5T46.5X6
Indendione (derivatives)T45.511T45.512T45.513T45.514T45.515T45.516
IndenololT44.7X1T44.7X2T44.7X3T44.7X4T44.7X5T44.7X6
InderalT44.7X1T44.7X2T44.7X3T44.7X4T44.7X5T44.7X6
IndianT40.711T40.712T40.713T40.714T40.715T40.716
Indian
  »hemp
T40.711T40.712T40.713T40.714T40.715T40.716
Indian
  »tobacco
T40.711T40.712T40.713T40.714T40.715T40.716
Indigo carmineT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
IndobufenT45.521T45.522T45.523T45.524T45.525T45.526
IndocinT39.2X1T39.2X2T39.2X3T39.2X4T39.2X5T39.2X6
Indocyanine greenT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
IndometacinT39.391T39.392T39.393T39.394T39.395T39.396
IndomethacinT39.391T39.392T39.393T39.394T39.395T39.396
Indomethacin
  »farnesil
T39.391T39.392T39.393T39.394T39.395T39.396
IndoraminT44.6X1T44.6X2T44.6X3T44.6X4T44.6X5T44.6X6
IndustrialT51.0X1T51.0X2T51.0X3T51.0X4  
Industrial
  »alcohol
T51.0X1T51.0X2T51.0X3T51.0X4  
Industrial
  »fumes
T51.0X1T51.0X2T51.0X3T51.0X4  
Industrial
  »solvents (fumes) (vapors)
T51.0X1T51.0X2T51.0X3T51.0X4  
Influenza vaccineT50.B91T50.B92T50.B93T50.B94T50.B95T50.B96
Ingested substance NECT65.91T65.92T65.93T65.94  
INHT37.1X1T37.1X2T37.1X3T37.1X4T37.1X5T37.1X6
InhibitorT46.4X1T46.4X2T46.4X3T46.4X4T46.4X5T46.4X6
Inhibitor
  »angiotensin-converting enzyme
T46.4X1T46.4X2T46.4X3T46.4X4T46.4X5T46.4X6
Inhibitor
  »carbonic anhydrase
T46.4X1T46.4X2T46.4X3T46.4X4T46.4X5T46.4X6
Inhibitor
  »fibrinolysis
T46.4X1T46.4X2T46.4X3T46.4X4T46.4X5T46.4X6
Inhibitor
  »monoamine oxidase NEC
T46.4X1T46.4X2T46.4X3T46.4X4T46.4X5T46.4X6
Inhibitor
  »monoamine oxidase NEC
    »hydrazine
T46.4X1T46.4X2T46.4X3T46.4X4T46.4X5T46.4X6
Inhibitor
  »postsynaptic
T46.4X1T46.4X2T46.4X3T46.4X4T46.4X5T46.4X6
Inhibitor
  »prothrombin synthesis
T46.4X1T46.4X2T46.4X3T46.4X4T46.4X5T46.4X6
InkT65.891T65.892T65.893T65.894  
Inorganic substance NECT57.91T57.92T57.93T57.94  
Inosine pranobexT37.5X1T37.5X2T37.5X3T37.5X4T37.5X5T37.5X6
InositolT50.991T50.992T50.993T50.994T50.995T50.996
Inositol
  »nicotinate
T50.991T50.992T50.993T50.994T50.995T50.996
InproquoneT45.1X1T45.1X2T45.1X3T45.1X4T45.1X5T45.1X6
Insect (sting), venomousT63.481T63.482T63.483T63.484  
Insect (sting), venomous
  »ant
T63.481T63.482T63.483T63.484  
Insect (sting), venomous
  »bee
T63.481T63.482T63.483T63.484  
Insect (sting), venomous
  »caterpillar
T63.481T63.482T63.483T63.484  
Insect (sting), venomous
  »hornet
T63.481T63.482T63.483T63.484  
Insect (sting), venomous
  »wasp
T63.481T63.482T63.483T63.484  
Insecticide NECT60.91T60.92T60.93T60.94  
Insecticide NEC
  »carbamate
T60.91T60.92T60.93T60.94  
Insecticide NEC
  »chlorinated
T60.91T60.92T60.93T60.94  
Insecticide NEC
  »mixed
T60.91T60.92T60.93T60.94  
Insecticide NEC
  »organochlorine
T60.91T60.92T60.93T60.94  
Insecticide NEC
  »organophosphorus
T60.91T60.92T60.93T60.94  
Insular tissue extractT38.3X1T38.3X2T38.3X3T38.3X4T38.3X5T38.3X6
Insulin (amorphous) (globin) (isophane) (Lente) (NPH) (Semilente) (Ultralente)T38.3X1T38.3X2T38.3X3T38.3X4T38.3X5T38.3X6
Insulin (amorphous) (globin) (isophane) (Lente) (NPH) (Semilente) (Ultralente)
  »defalan
T38.3X1T38.3X2T38.3X3T38.3X4T38.3X5T38.3X6
Insulin (amorphous) (globin) (isophane) (Lente) (NPH) (Semilente) (Ultralente)
  »human
T38.3X1T38.3X2T38.3X3T38.3X4T38.3X5T38.3X6
Insulin (amorphous) (globin) (isophane) (Lente) (NPH) (Semilente) (Ultralente)
  »injection, soluble
T38.3X1T38.3X2T38.3X3T38.3X4T38.3X5T38.3X6
Insulin (amorphous) (globin) (isophane) (Lente) (NPH) (Semilente) (Ultralente)
  »injection, soluble
    »biphasic
T38.3X1T38.3X2T38.3X3T38.3X4T38.3X5T38.3X6
Insulin (amorphous) (globin) (isophane) (Lente) (NPH) (Semilente) (Ultralente)
  »intermediate acting
T38.3X1T38.3X2T38.3X3T38.3X4T38.3X5T38.3X6
Insulin (amorphous) (globin) (isophane) (Lente) (NPH) (Semilente) (Ultralente)
  »protamine zinc
T38.3X1T38.3X2T38.3X3T38.3X4T38.3X5T38.3X6
Insulin (amorphous) (globin) (isophane) (Lente) (NPH) (Semilente) (Ultralente)
  »slow acting
T38.3X1T38.3X2T38.3X3T38.3X4T38.3X5T38.3X6
Insulin (amorphous) (globin) (isophane) (Lente) (NPH) (Semilente) (Ultralente)
  »zinc
T38.3X1T38.3X2T38.3X3T38.3X4T38.3X5T38.3X6
Insulin (amorphous) (globin) (isophane) (Lente) (NPH) (Semilente) (Ultralente)
  »zinc
    »protamine injection
T38.3X1T38.3X2T38.3X3T38.3X4T38.3X5T38.3X6
Insulin (amorphous) (globin) (isophane) (Lente) (NPH) (Semilente) (Ultralente)
  »zinc
    »suspension (amorphous) (crystalline)
T38.3X1T38.3X2T38.3X3T38.3X4T38.3X5T38.3X6
Interferon (alpha) (beta) (gamma)T37.5X1T37.5X2T37.5X3T37.5X4T37.5X5T37.5X6
Intestinal motility control drugT47.6X1T47.6X2T47.6X3T47.6X4T47.6X5T47.6X6
Intestinal motility control drug
  »biological
T47.6X1T47.6X2T47.6X3T47.6X4T47.6X5T47.6X6
IntranarconT41.1X1T41.1X2T41.1X3T41.1X4T41.1X5T41.1X6
IntravenousT50.991T50.992T50.993T50.994T50.995T50.996
Intravenous
  »amino acids
T50.991T50.992T50.993T50.994T50.995T50.996
Intravenous
  »fat suspension
T50.991T50.992T50.993T50.994T50.995T50.996
InulinT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Invert sugarT50.3X1T50.3X2T50.3X3T50.3X4T50.3X5T50.3X6
Iobenzamic acidT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Iocarmic acidT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Iocetamic acidT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
IodamideT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Iodide NEC [See Also: Iodine]T49.0X1T49.0X2T49.0X3T49.0X4T49.0X5T49.0X6
Iodide NEC [See Also: Iodine]
  »mercury (ointment)
T49.0X1T49.0X2T49.0X3T49.0X4T49.0X5T49.0X6
Iodide NEC [See Also: Iodine]
  »methylate
T49.0X1T49.0X2T49.0X3T49.0X4T49.0X5T49.0X6
Iodide NEC [See Also: Iodine]
  »potassium (expectorant) NEC
T49.0X1T49.0X2T49.0X3T49.0X4T49.0X5T49.0X6
IodinatedT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Iodinated
  »contrast medium
T50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Iodinated
  »glycerol
T50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Iodinated
  »human serum albumin (131I)
T50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Iodine (antiseptic, external) (tincture) NECT49.0X1T49.0X2T49.0X3T49.0X4T49.0X5T49.0X6
Iodine (antiseptic, external) (tincture) NEC
  »125 [See Also: Radiation sickness, and exposure to radioactive isotopes]
T49.0X1T49.0X2T49.0X3T49.0X4T49.0X5T49.0X6
Iodine (antiseptic, external) (tincture) NEC
  »125 [See Also: Radiation sickness, and exposure to radioactive isotopes]
    »therapeutic
T49.0X1T49.0X2T49.0X3T49.0X4T49.0X5T49.0X6
Iodine (antiseptic, external) (tincture) NEC
  »131 [See Also: Radiation sickness, and exposure to radioactive isotopes]
T49.0X1T49.0X2T49.0X3T49.0X4T49.0X5T49.0X6
Iodine (antiseptic, external) (tincture) NEC
  »131 [See Also: Radiation sickness, and exposure to radioactive isotopes]
    »therapeutic
T49.0X1T49.0X2T49.0X3T49.0X4T49.0X5T49.0X6
Iodine (antiseptic, external) (tincture) NEC
  »diagnostic
T49.0X1T49.0X2T49.0X3T49.0X4T49.0X5T49.0X6
Iodine (antiseptic, external) (tincture) NEC
  »for thyroid conditions (antithyroid)
T49.0X1T49.0X2T49.0X3T49.0X4T49.0X5T49.0X6
Iodine (antiseptic, external) (tincture) NEC
  »solution
T49.0X1T49.0X2T49.0X3T49.0X4T49.0X5T49.0X6
Iodine (antiseptic, external) (tincture) NEC
  »vapor
T49.0X1T49.0X2T49.0X3T49.0X4T49.0X5T49.0X6
IodipamideT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Iodized (poppy seed) oilT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
IodobismitolT37.8X1T37.8X2T37.8X3T37.8X4T37.8X5T37.8X6
IodochlorhydroxyquinT37.8X1T37.8X2T37.8X3T37.8X4T37.8X5T37.8X6
Iodochlorhydroxyquin
  »topical
T37.8X1T37.8X2T37.8X3T37.8X4T37.8X5T37.8X6
IodochlorhydroxyquinolineT37.8X1T37.8X2T37.8X3T37.8X4T37.8X5T37.8X6
Iodocholesterol (131I)T50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
IodoformT49.0X1T49.0X2T49.0X3T49.0X4T49.0X5T49.0X6
Iodohippuric acidT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Iodopanoic acidT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Iodophthalein (sodium)T50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
IodopyracetT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
IodoquinolT37.8X1T37.8X2T37.8X3T37.8X4T37.8X5T37.8X6
Iodoxamic acidT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
IofendylateT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Ioglycamic acidT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
IohexolT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Ion exchange resinT47.8X1T47.8X2T47.8X3T47.8X4T47.8X5T47.8X6
Ion exchange resin
  »anion
T47.8X1T47.8X2T47.8X3T47.8X4T47.8X5T47.8X6
Ion exchange resin
  »cation
T47.8X1T47.8X2T47.8X3T47.8X4T47.8X5T47.8X6
Ion exchange resin
  »cholestyramine
T47.8X1T47.8X2T47.8X3T47.8X4T47.8X5T47.8X6
Ion exchange resin
  »intestinal
T47.8X1T47.8X2T47.8X3T47.8X4T47.8X5T47.8X6
IopamidolT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Iopanoic acidT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Iophenoic acidT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Iopodate, sodiumT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Iopodic acidT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
IopromideT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
IopydolT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Iotalamic acidT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
IothalamateT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
IothiouracilT38.2X1T38.2X2T38.2X3T38.2X4T38.2X5T38.2X6
IotrolT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
IotrolanT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
IotroxateT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Iotroxic acidT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
IoversolT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
IoxaglateT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Ioxaglic acidT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Ioxitalamic acidT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
IpecacT47.7X1T47.7X2T47.7X3T47.7X4T47.7X5T47.7X6
IpecacuanhaT48.4X1T48.4X2T48.4X3T48.4X4T48.4X5T48.4X6
Ipodate, calciumT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
IpralT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Ipratropium (bromide)T48.6X1T48.6X2T48.6X3T48.6X4T48.6X5T48.6X6
IpriflavoneT46.3X1T46.3X2T46.3X3T46.3X4T46.3X5T46.3X6
IprindoleT43.011T43.012T43.013T43.014T43.015T43.016
IproclozideT43.1X1T43.1X2T43.1X3T43.1X4T43.1X5T43.1X6
IprofeninT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
IproheptineT49.2X1T49.2X2T49.2X3T49.2X4T49.2X5T49.2X6
IproniazidT43.1X1T43.1X2T43.1X3T43.1X4T43.1X5T43.1X6
IproplatinT45.1X1T45.1X2T45.1X3T45.1X4T45.1X5T45.1X6
IproveratrilT46.1X1T46.1X2T46.1X3T46.1X4T46.1X5T46.1X6
Iron (compounds) (medicinal) NECT45.4X1T45.4X2T45.4X3T45.4X4T45.4X5T45.4X6
Iron (compounds) (medicinal) NEC
  »ammonium
T45.4X1T45.4X2T45.4X3T45.4X4T45.4X5T45.4X6
Iron (compounds) (medicinal) NEC
  »dextran injection
T45.4X1T45.4X2T45.4X3T45.4X4T45.4X5T45.4X6
Iron (compounds) (medicinal) NEC
  »nonmedicinal
T45.4X1T45.4X2T45.4X3T45.4X4T45.4X5T45.4X6
Iron (compounds) (medicinal) NEC
  »salts
T45.4X1T45.4X2T45.4X3T45.4X4T45.4X5T45.4X6
Iron (compounds) (medicinal) NEC
  »sorbitex
T45.4X1T45.4X2T45.4X3T45.4X4T45.4X5T45.4X6
Iron (compounds) (medicinal) NEC
  »sorbitol citric acid complex
T45.4X1T45.4X2T45.4X3T45.4X4T45.4X5T45.4X6
Irrigating fluid (vaginal)T49.8X1T49.8X2T49.8X3T49.8X4T49.8X5T49.8X6
Irrigating fluid (vaginal)
  »eye
T49.8X1T49.8X2T49.8X3T49.8X4T49.8X5T49.8X6
IsepamicinT36.5X1T36.5X2T36.5X3T36.5X4T36.5X5T36.5X6
Isoaminile (citrate)T48.3X1T48.3X2T48.3X3T48.3X4T48.3X5T48.3X6
Isoamyl nitriteT46.3X1T46.3X2T46.3X3T46.3X4T46.3X5T46.3X6
IsobenzanT60.1X1T60.1X2T60.1X3T60.1X4  
Isobutyl acetateT52.8X1T52.8X2T52.8X3T52.8X4  
IsocarboxazidT43.1X1T43.1X2T43.1X3T43.1X4T43.1X5T43.1X6
IsoconazoleT49.0X1T49.0X2T49.0X3T49.0X4T49.0X5T49.0X6
IsocyanateT65.0X1T65.0X2T65.0X3T65.0X4  
IsoephedrineT44.991T44.992T44.993T44.994T44.995T44.996
IsoetarineT48.6X1T48.6X2T48.6X3T48.6X4T48.6X5T48.6X6
IsoethadioneT42.2X1T42.2X2T42.2X3T42.2X4T42.2X5T42.2X6
IsoetharineT44.5X1T44.5X2T44.5X3T44.5X4T44.5X5T44.5X6
IsofluraneT41.0X1T41.0X2T41.0X3T41.0X4T41.0X5T41.0X6
IsoflurophateT44.0X1T44.0X2T44.0X3T44.0X4T44.0X5T44.0X6
Isomaltose, ferric complexT45.4X1T45.4X2T45.4X3T45.4X4T45.4X5T45.4X6
IsomethepteneT44.3X1T44.3X2T44.3X3T44.3X4T44.3X5T44.3X6
IsoniazidT37.1X1T37.1X2T37.1X3T37.1X4T37.1X5T37.1X6
Isoniazid
  »with
T37.1X1T37.1X2T37.1X3T37.1X4T37.1X5T37.1X6
Isoniazid
  »with
    »rifampicin
T37.1X1T37.1X2T37.1X3T37.1X4T37.1X5T37.1X6
Isoniazid
  »with
    »thioacetazone
T37.1X1T37.1X2T37.1X3T37.1X4T37.1X5T37.1X6
Isonicotinic acid hydrazideT37.1X1T37.1X2T37.1X3T37.1X4T37.1X5T37.1X6
IsonipecaineT40.491T40.492T40.493T40.494T40.495T40.496
IsopentaquineT37.2X1T37.2X2T37.2X3T37.2X4T37.2X5T37.2X6
Isophane insulinT38.3X1T38.3X2T38.3X3T38.3X4T38.3X5T38.3X6
IsophoroneT65.891T65.892T65.893T65.894  
IsophosphamideT45.1X1T45.1X2T45.1X3T45.1X4T45.1X5T45.1X6
IsopregnenoneT38.5X1T38.5X2T38.5X3T38.5X4T38.5X5T38.5X6
IsoprenalineT48.6X1T48.6X2T48.6X3T48.6X4T48.6X5T48.6X6
IsopromethazineT43.3X1T43.3X2T43.3X3T43.3X4T43.3X5T43.3X6
IsopropamideT44.3X1T44.3X2T44.3X3T44.3X4T44.3X5T44.3X6
Isopropamide
  »iodide
T44.3X1T44.3X2T44.3X3T44.3X4T44.3X5T44.3X6
IsopropanolT51.2X1T51.2X2T51.2X3T51.2X4  
IsopropylT52.8X1T52.8X2T52.8X3T52.8X4  
Isopropyl
  »acetate
T52.8X1T52.8X2T52.8X3T52.8X4  
Isopropyl
  »alcohol
T52.8X1T52.8X2T52.8X3T52.8X4  
Isopropyl
  »alcohol
    »medicinal
T52.8X1T52.8X2T52.8X3T52.8X4  
Isopropyl
  »ether
T52.8X1T52.8X2T52.8X3T52.8X4  
IsopropylaminophenazoneT39.2X1T39.2X2T39.2X3T39.2X4T39.2X5T39.2X6
IsoproterenolT48.6X1T48.6X2T48.6X3T48.6X4T48.6X5T48.6X6
Isosorbide dinitrateT46.3X1T46.3X2T46.3X3T46.3X4T46.3X5T46.3X6
IsothipendylT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
IsotretinoinT50.991T50.992T50.993T50.994T50.995T50.996
Isoxazolyl penicillinT36.0X1T36.0X2T36.0X3T36.0X4T36.0X5T36.0X6
IsoxicamT39.391T39.392T39.393T39.394T39.395T39.396
IsoxsuprineT46.7X1T46.7X2T46.7X3T46.7X4T46.7X5T46.7X6
IspagulaT47.4X1T47.4X2T47.4X3T47.4X4T47.4X5T47.4X6
Ispagula
  »husk
T47.4X1T47.4X2T47.4X3T47.4X4T47.4X5T47.4X6
IsradipineT46.1X1T46.1X2T46.1X3T46.1X4T46.1X5T46.1X6
I-thyroxine sodiumT38.1X1T38.1X2T38.1X3T38.1X4T38.1X5T38.1X6
ItraconazoleT37.8X1T37.8X2T37.8X3T37.8X4T37.8X5T37.8X6
Itramin tosilateT46.3X1T46.3X2T46.3X3T46.3X4T46.3X5T46.3X6
IvermectinT37.4X1T37.4X2T37.4X3T37.4X4T37.4X5T37.4X6
IzoniazidT37.1X1T37.1X2T37.1X3T37.1X4T37.1X5T37.1X6
Izoniazid
  »with thioacetazone
T37.1X1T37.1X2T37.1X3T37.1X4T37.1X5T37.1X6
lmmu-GT50.Z11T50.Z12T50.Z13T50.Z14T50.Z15T50.Z16

Coding Guidelines Table of Drugs and Chemicals

The Codes in categories T36 - T65 are combination codes that include the substance that was taken as well as the intent. No additional external cause code is required for poisonings, toxic effects, adverse effects and underdosing codes.

  • Do not code directly from the Table of Drugs and Chemicals. Always refer back to the Tabular List.
  • Use as many codes as necessary to describe completely all drugs, medicinal or biological substances.
  • If the same code would describe the causative agent for more than one adverse reaction, poisoning, toxic effect or underdosing, assign the code only once.
  • If two or more drugs, medicinal or biological substances are reported, code each individually unless a combination code is listed in the Table of Drugs and Chemicals.

(a) Adverse Effect

When coding an adverse effect of a drug that has been correctly prescribed and properly administered, assign the appropriate code for the nature of the adverse effect followed by the appropriate code for the adverse effect of the drug (T36-T50). The code for the drug should have a 5th or 6th character "5" (for example T36.0X5-) Examples of the nature of an adverse effect are tachycardia, delirium, gastrointestinal hemorrhaging, vomiting, hypokalemia, hepatitis, renal failure, or respiratory failure.

(b) Poisoning

When coding a poisoning or reaction to the improper use of a medication (e.g., overdose, wrong substance given or taken in error, wrong route of administration), first assign the appropriate code from categories T36-T50. The poisoning codes have an associated intent as their 5th or 6th character (accidental, intentional self-harm, assault and undetermined. If the intent of the poisoning is unknown or unspecified, code the intent as accidental intent. The undetermined intent is only for use if the documentation in the record specifies that the intent cannot be determined. Use additional code(s) for all manifestations of poisonings.

If there is also a diagnosis of abuse or dependence of the substance, the abuse or dependence is assigned as an additional code.

Examples of poisoning include:

  • (i) Error was made in drug prescription. Errors made in drug prescription or in the administration of the drug by provider, nurse, patient, or other person.
  • (ii) Overdose of a drug intentionally taken. If an overdose of a drug was intentionally taken or administered and resulted in drug toxicity, it would be coded as a poisoning.
  • (iii)Nonprescribed drug taken with correctly prescribed and properly administered drug. If a nonprescribed drug or medicinal agent was taken in combination with a correctly prescribed and properly administered drug, any drug toxicity or other reaction resulting from the interaction of the two drugs would be classified as a poisoning.
  • (iv) Interaction of drug(s) and alcohol. When a reaction results from the interaction of a drug(s) and alcohol, this would be classified as poisoning.

See Section I.C.4. if poisoning is the result of insulin pump malfunctions.

(c) Underdosing

Underdosing refers to taking less of a medication than is prescribed by a provider or a manufacturer's instruction. For underdosing, assign the code from categories T36-T50 (fifth or sixth character "6").

Codes for underdosing should never be assigned as principal or first-listed codes. If a patient has a relapse or exacerbation of the medical condition for which the drug is prescribed because of the reduction in dose, then the medical condition itself should be coded.

Noncompliance (Z91.12-, Z91.13-) or complication of care (Y63.6-Y63.9) codes are to be used with an underdosing code to indicate intent, if known.

(d) Toxic Effects

When a harmful substance is ingested or comes in contact with a person, this is classified as a toxic effect. The toxic effect codes are in categories T51-T65. Toxic effect codes have an associated intent: accidental, intentional self-harm, assault and undetermined.