T ICD-10-CM Categories: Category Index
Browse 72 top-level ICD-10-CM categories beginning with T, then follow their complete FY 2027 child-code hierarchies.
Complete category list
Categories beginning with T
Open a category to continue through its complete hierarchy of more specific codes.
T07Unspecified multiple injuries
T14Injury of unspecified body region
T15Foreign body on external eye
T16Foreign body in ear
T17Foreign body in respiratory tract
T18Foreign body in alimentary tract
T19Foreign body in genitourinary tract
T20Burn and corrosion of head, face, and neck
T21Burn and corrosion of trunk
T22Burn and corrosion of shoulder and upper limb, except wrist and hand
T23Burn and corrosion of wrist and hand
T24Burn and corrosion of lower limb, except ankle and foot
T25Burn and corrosion of ankle and foot
T26Burn and corrosion confined to eye and adnexa
T27Burn and corrosion of respiratory tract
T28Burn and corrosion of other internal organs
T30Burn and corrosion, body region unspecified
T31Burns classified according to extent of body surface involved
T32Corrosions classified according to extent of body surface involved
T33Superficial frostbite
T34Frostbite with tissue necrosis
T36Poisoning by, adverse effect of and underdosing of systemic antibiotics
T37Poisoning by, adverse effect of and underdosing of other systemic anti-infectives and antiparasitics
T38Poisoning by, adverse effect of and underdosing of hormones and their synthetic substitutes and antagonists, not elsewhere classified
T39Poisoning by, adverse effect of and underdosing of nonopioid analgesics, antipyretics and antirheumatics
T40Poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens]
T41Poisoning by, adverse effect of and underdosing of anesthetics and therapeutic gases
T42Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs
T43Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
T44Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system
T45Poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classified
T46Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system
T47Poisoning by, adverse effect of and underdosing of agents primarily affecting the gastrointestinal system
T48Poisoning by, adverse effect of and underdosing of agents primarily acting on smooth and skeletal muscles and the respiratory system
T49Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs
T50Poisoning by, adverse effect of and underdosing of diuretics and other and unspecified drugs, medicaments and biological substances
T51Toxic effect of alcohol
T52Toxic effect of organic solvents
T53Toxic effect of halogen derivatives of aliphatic and aromatic hydrocarbons
T54Toxic effect of corrosive substances
T55Toxic effect of soaps and detergents
T56Toxic effect of metals
T57Toxic effect of other inorganic substances
T58Toxic effect of carbon monoxide
T59Toxic effect of other gases, fumes and vapors
T60Toxic effect of pesticides
T61Toxic effect of noxious substances eaten as seafood
T62Toxic effect of other noxious substances eaten as food
T63Toxic effect of contact with venomous animals and plants
T64Toxic effect of aflatoxin and other mycotoxin food contaminants
T65Toxic effect of other and unspecified substances
T66Radiation sickness, unspecified
T67Effects of heat and light
T68Hypothermia
T69Other effects of reduced temperature
T70Effects of air pressure and water pressure
T71Asphyxiation
T73Effects of other deprivation
T74Adult and child abuse, neglect and other maltreatment, confirmed
T75Other and unspecified effects of other external causes
T76Adult and child abuse, neglect and other maltreatment, suspected
T78Adverse effects, not elsewhere classified
T79Certain early complications of trauma, not elsewhere classified
T80Complications following infusion, transfusion and therapeutic injection
T81Complications of procedures, not elsewhere classified
T82Complications of cardiac and vascular prosthetic devices, implants and grafts
T83Complications of genitourinary prosthetic devices, implants and grafts
T84Complications of internal orthopedic prosthetic devices, implants and grafts
T85Complications of other internal prosthetic devices, implants and grafts
T86Complications of transplanted organs and tissue
T87Complications peculiar to reattachment and amputation
T88Other complications of surgical and medical care, not elsewhere classified
Transparency
Source and release
This category index is generated from Vero’s repository-backed ICD-10-CM hierarchy. Every listed category is a top-level record, and each linked category page exposes its direct child codes.
Review the CDC/NCHS ICD-10-CM sourceCategory navigation
Frequently asked questions
Which ICD-10-CM categories begin with T?
This index lists 72 top-level categories beginning with T from Vero’s FY 2027 U.S. ICD-10-CM reference dataset.
How do I find a more specific T code?
Open a category below, then follow its linked child-code hierarchy until you reach the code supported by the documentation.
Which ICD-10-CM release does this T index use?
The index uses the FY 2027 U.S. ICD-10-CM release and the repository-backed hierarchy displayed on each linked code page.
Is every T category billable?
No. These are top-level categories used for navigation. Follow the hierarchy to a sufficiently specific code and confirm the active code set, official guidance, and payer requirements.
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