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.
Categories beginning with T
Open a category to continue through its complete hierarchy of more specific codes.
T07Unspecified multiple injuriesT14Injury of unspecified body regionT15Foreign body on external eyeT16Foreign body in earT17Foreign body in respiratory tractT18Foreign body in alimentary tractT19Foreign body in genitourinary tractT20Burn and corrosion of head, face, and neckT21Burn and corrosion of trunkT22Burn and corrosion of shoulder and upper limb, except wrist and handT23Burn and corrosion of wrist and handT24Burn and corrosion of lower limb, except ankle and footT25Burn and corrosion of ankle and footT26Burn and corrosion confined to eye and adnexaT27Burn and corrosion of respiratory tractT28Burn and corrosion of other internal organsT30Burn and corrosion, body region unspecifiedT31Burns classified according to extent of body surface involvedT32Corrosions classified according to extent of body surface involvedT33Superficial frostbiteT34Frostbite with tissue necrosisT36Poisoning by, adverse effect of and underdosing of systemic antibioticsT37Poisoning by, adverse effect of and underdosing of other systemic anti-infectives and antiparasiticsT38Poisoning by, adverse effect of and underdosing of hormones and their synthetic substitutes and antagonists, not elsewhere classifiedT39Poisoning by, adverse effect of and underdosing of nonopioid analgesics, antipyretics and antirheumaticsT40Poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens]T41Poisoning by, adverse effect of and underdosing of anesthetics and therapeutic gasesT42Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugsT43Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classifiedT44Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous systemT45Poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classifiedT46Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular systemT47Poisoning by, adverse effect of and underdosing of agents primarily affecting the gastrointestinal systemT48Poisoning by, adverse effect of and underdosing of agents primarily acting on smooth and skeletal muscles and the respiratory systemT49Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugsT50Poisoning by, adverse effect of and underdosing of diuretics and other and unspecified drugs, medicaments and biological substancesT51Toxic effect of alcoholT52Toxic effect of organic solventsT53Toxic effect of halogen derivatives of aliphatic and aromatic hydrocarbonsT54Toxic effect of corrosive substancesT55Toxic effect of soaps and detergentsT56Toxic effect of metalsT57Toxic effect of other inorganic substancesT58Toxic effect of carbon monoxideT59Toxic effect of other gases, fumes and vaporsT60Toxic effect of pesticidesT61Toxic effect of noxious substances eaten as seafoodT62Toxic effect of other noxious substances eaten as foodT63Toxic effect of contact with venomous animals and plantsT64Toxic effect of aflatoxin and other mycotoxin food contaminantsT65Toxic effect of other and unspecified substancesT66Radiation sickness, unspecifiedT67Effects of heat and lightT68HypothermiaT69Other effects of reduced temperatureT70Effects of air pressure and water pressureT71AsphyxiationT73Effects of other deprivationT74Adult and child abuse, neglect and other maltreatment, confirmedT75Other and unspecified effects of other external causesT76Adult and child abuse, neglect and other maltreatment, suspectedT78Adverse effects, not elsewhere classifiedT79Certain early complications of trauma, not elsewhere classifiedT80Complications following infusion, transfusion and therapeutic injectionT81Complications of procedures, not elsewhere classifiedT82Complications of cardiac and vascular prosthetic devices, implants and graftsT83Complications of genitourinary prosthetic devices, implants and graftsT84Complications of internal orthopedic prosthetic devices, implants and graftsT85Complications of other internal prosthetic devices, implants and graftsT86Complications of transplanted organs and tissueT87Complications peculiar to reattachment and amputationT88Other complications of surgical and medical care, not elsewhere classifiedSource and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
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.
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.