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

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
Vaccine NECT50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »antineoplastic
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »bacterial NEC
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »bacterial NEC
    »mixed NEC
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »bacterial NEC
    »with
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »bacterial NEC
    »with
      »other bacterial component
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »bacterial NEC
    »with
      »pertussis component
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »bacterial NEC
    »with
      »viral-rickettsial component
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »BCG
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »cholera
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »diphtheria
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »diphtheria
    »with tetanus
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »diphtheria
    »with tetanus
      »and pertussis
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »influenza
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »measles
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »measles
    »with mumps and rubella
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »meningococcal
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »mumps
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »paratyphoid
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »pertussis
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »pertussis
    »with diphtheria
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »pertussis
    »with diphtheria
      »and tetanus
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »pertussis
    »with other component
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »plague
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »poliomyelitis
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »poliovirus
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »rabies
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »respiratory syncytial virus
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »rickettsial NEC
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »rickettsial NEC
    »with
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »rickettsial NEC
    »with
      »bacterial component
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »Rocky Mountain spotted fever
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »rubella
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »sabin oral
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »smallpox
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »TAB
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »tetanus
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »typhoid
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »typhus
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »viral NEC
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »yellow fever
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccinia immune globulinT50.Z11T50.Z12T50.Z13T50.Z14T50.Z15T50.Z16
Vaginal contraceptivesT49.8X1T49.8X2T49.8X3T49.8X4T49.8X5T49.8X6
ValerianT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Valerian
  »root
T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Valerian
  »tincture
T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Valethamate bromideT44.3X1T44.3X2T44.3X3T44.3X4T44.3X5T44.3X6
ValisoneT49.0X1T49.0X2T49.0X3T49.0X4T49.0X5T49.0X6
ValiumT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
ValmidT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ValnoctamideT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Valproate (sodium)T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Valproic acidT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ValpromideT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
VanadiumT56.891T56.892T56.893T56.894  
VancomycinT36.8X1T36.8X2T36.8X3T36.8X4T36.8X5T36.8X6
Vapor [See Also: Gas]T59.91T59.92T59.93T59.94  
Vapor [See Also: Gas]
  »kiln (carbon monoxide)
T59.91T59.92T59.93T59.94  
Vapor [See Also: Gas]
  »lead
T59.91T59.92T59.93T59.94  
Vapor [See Also: Gas]
  »specified source NEC
T59.91T59.92T59.93T59.94  
VardenafilT46.7X1T46.7X2T46.7X3T46.7X4T46.7X5T46.7X6
Varicose reduction drugT46.8X1T46.8X2T46.8X3T46.8X4T46.8X5T46.8X6
VarnishT65.4X1T65.4X2T65.4X3T65.4X4  
Varnish
  »cleaner
T65.4X1T65.4X2T65.4X3T65.4X4  
VaselineT49.3X1T49.3X2T49.3X3T49.3X4T49.3X5T49.3X6
VasodilanT46.7X1T46.7X2T46.7X3T46.7X4T46.7X5T46.7X6
VasodilatorT46.3X1T46.3X2T46.3X3T46.3X4T46.3X5T46.3X6
Vasodilator
  »coronary NEC
T46.3X1T46.3X2T46.3X3T46.3X4T46.3X5T46.3X6
Vasodilator
  »peripheral NEC
T46.3X1T46.3X2T46.3X3T46.3X4T46.3X5T46.3X6
VasopressinT38.891T38.892T38.893T38.894T38.895T38.896
Vasopressor drugsT38.891T38.892T38.893T38.894T38.895T38.896
Vecuronium bromideT48.1X1T48.1X2T48.1X3T48.1X4T48.1X5T48.1X6
Vegetable extract, astringentT49.2X1T49.2X2T49.2X3T49.2X4T49.2X5T49.2X6
VenlafaxineT43.211T43.212T43.213T43.214T43.215T43.216
Venom, venomous (bite) (sting)T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »amphibian NEC
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »animal NEC
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »ant
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »arthropod NEC
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »bee
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »centipede
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »fish
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »frog
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »hornet
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »insect NEC
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »lizard
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »marine
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »marine
    »animals
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »marine
    »animals
      »bluebottle
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »marine
    »animals
      »jellyfish NEC
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »marine
    »animals
      »Portuguese Man-o-war
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »marine
    »animals
      »sea anemone
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »marine
    »animals
      »specified NEC
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »marine
    »fish
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »marine
    »plants
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »marine
    »sting ray
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »millipede (tropical)
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »plant NEC
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »plant NEC
    »marine
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »reptile
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »reptile
    »gila monster
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »reptile
    »lizard NEC
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »scorpion
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »snake
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »snake
    »African NEC
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »snake
    »American (North) (South) NEC
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »snake
    »Asian
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »snake
    »Australian
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »snake
    »cobra
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »snake
    »coral snake
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »snake
    »rattlesnake
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »snake
    »specified NEC
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »snake
    »taipan
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »specified NEC
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »spider
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »spider
    »black widow
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »spider
    »brown recluse
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »spider
    »specified NEC
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »spider
    »tarantula
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »sting ray
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »toad
T63.91T63.92T63.93T63.94  
Venom, venomous (bite) (sting)
  »wasp
T63.91T63.92T63.93T63.94  
Venous sclerosing drug NECT46.8X1T46.8X2T46.8X3T46.8X4T46.8X5T46.8X6
VeramonT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
VerapamilT46.1X1T46.1X2T46.1X3T46.1X4T46.1X5T46.1X6
VeratrineT46.5X1T46.5X2T46.5X3T46.5X4T46.5X5T46.5X6
VeratrumT62.2X1T62.2X2T62.2X3T62.2X4  
Veratrum
  »album
T62.2X1T62.2X2T62.2X3T62.2X4  
Veratrum
  »alkaloids
T62.2X1T62.2X2T62.2X3T62.2X4  
Veratrum
  »viride
T62.2X1T62.2X2T62.2X3T62.2X4  
VerdigrisT60.3X1T60.3X2T60.3X3T60.3X4  
VeronalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
VeroxilT37.4X1T37.4X2T37.4X3T37.4X4T37.4X5T37.4X6
VersenateT50.6X1T50.6X2T50.6X3T50.6X4T50.6X5T50.6X6
VersidyneT39.8X1T39.8X2T39.8X3T39.8X4T39.8X5T39.8X6
VetrabutineT48.0X1T48.0X2T48.0X3T48.0X4T48.0X5T48.0X6
VidarabineT37.5X1T37.5X2T37.5X3T37.5X4T37.5X5T37.5X6
ViennaT57.0X1T57.0X2T57.0X3T57.0X4  
Vienna
  »green
T57.0X1T57.0X2T57.0X3T57.0X4  
Vienna
  »green
    »insecticide
T57.0X1T57.0X2T57.0X3T57.0X4  
Vienna
  »red
T57.0X1T57.0X2T57.0X3T57.0X4  
Vienna
  »red
    »pharmaceutical dye
T57.0X1T57.0X2T57.0X3T57.0X4  
VigabatrinT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ViloxazineT43.291T43.292T43.293T43.294T43.295T43.296
ViminolT39.8X1T39.8X2T39.8X3T39.8X4T39.8X5T39.8X6
Vinbarbital, vinbarbitoneT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
VinblastineT45.1X1T45.1X2T45.1X3T45.1X4T45.1X5T45.1X6
VinburnineT46.7X1T46.7X2T46.7X3T46.7X4T46.7X5T46.7X6
VincamineT45.1X1T45.1X2T45.1X3T45.1X4T45.1X5T45.1X6
VincristineT45.1X1T45.1X2T45.1X3T45.1X4T45.1X5T45.1X6
VindesineT45.1X1T45.1X2T45.1X3T45.1X4T45.1X5T45.1X6
Vinesthene, vinetheneT41.0X1T41.0X2T41.0X3T41.0X4T41.0X5T41.0X6
Vinorelbine tartrateT45.1X1T45.1X2T45.1X3T45.1X4T45.1X5T45.1X6
VinpocetineT46.7X1T46.7X2T46.7X3T46.7X4T46.7X5T46.7X6
VinylT65.891T65.892T65.893T65.894  
Vinyl
  »acetate
T65.891T65.892T65.893T65.894  
Vinyl
  »bital
T65.891T65.892T65.893T65.894  
Vinyl
  »bromide
T65.891T65.892T65.893T65.894  
Vinyl
  »chloride
T65.891T65.892T65.893T65.894  
Vinyl
  »ether
T65.891T65.892T65.893T65.894  
VinylbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Vinylidene chlorideT65.891T65.892T65.893T65.894  
VioformT37.8X1T37.8X2T37.8X3T37.8X4T37.8X5T37.8X6
Vioform
  »topical
T37.8X1T37.8X2T37.8X3T37.8X4T37.8X5T37.8X6
ViomycinT36.8X1T36.8X2T36.8X3T36.8X4T36.8X5T36.8X6
ViosterolT45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Viper (venom)T63.091T63.092T63.093T63.094  
VipryniumT37.4X1T37.4X2T37.4X3T37.4X4T37.4X5T37.4X6
ViquidilT46.7X1T46.7X2T46.7X3T46.7X4T46.7X5T46.7X6
Viral vaccine NECT50.B91T50.B92T50.B93T50.B94T50.B95T50.B96
VirginiamycinT36.8X1T36.8X2T36.8X3T36.8X4T36.8X5T36.8X6
VirugonT37.5X1T37.5X2T37.5X3T37.5X4T37.5X5T37.5X6
Viscous agentT50.901T50.902T50.903T50.904T50.905T50.906
VisineT49.5X1T49.5X2T49.5X3T49.5X4T49.5X5T49.5X6
VisnadineT46.3X1T46.3X2T46.3X3T46.3X4T46.3X5T46.3X6
Vitamin NECT45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Vitamin NEC
  »A
T45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Vitamin NEC
  »B NEC
T45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Vitamin NEC
  »B NEC
    »nicotinic acid
T45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Vitamin NEC
  »B1
T45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Vitamin NEC
  »B12
T45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Vitamin NEC
  »B15
T45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Vitamin NEC
  »B2
T45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Vitamin NEC
  »B6
T45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Vitamin NEC
  »C
T45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Vitamin NEC
  »D
T45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Vitamin NEC
  »D2
T45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Vitamin NEC
  »D3
T45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Vitamin NEC
  »E
T45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Vitamin NEC
  »E acetate
T45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Vitamin NEC
  »hematopoietic
T45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Vitamin NEC
  »K NEC
T45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Vitamin NEC
  »K1
T45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Vitamin NEC
  »K2
T45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Vitamin NEC
  »PP
T45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Vitamin NEC
  »ulceroprotectant
T45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Vleminckx's solutionT49.4X1T49.4X2T49.4X3T49.4X4T49.4X5T49.4X6

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.