X ICD-10-CM Categories: Category Index
Browse 51 top-level ICD-10-CM categories beginning with X, then follow their complete FY 2027 child-code hierarchies.
Complete category list
Categories beginning with X
Open a category to continue through its complete hierarchy of more specific codes.
X00Exposure to uncontrolled fire in building or structure
X01Exposure to uncontrolled fire, not in building or structure
X02Exposure to controlled fire in building or structure
X03Exposure to controlled fire, not in building or structure
X04Exposure to ignition of highly flammable material
X05Exposure to ignition or melting of nightwear
X06Exposure to ignition or melting of other clothing and apparel
X08Exposure to other specified smoke, fire and flames
X10Contact with hot drinks, food, fats and cooking oils
X11Contact with hot tap-water
X12Contact with other hot fluids
X13Contact with steam and other hot vapors
X14Contact with hot air and other hot gases
X15Contact with hot household appliances
X16Contact with hot heating appliances, radiators and pipes
X17Contact with hot engines, machinery and tools
X18Contact with other hot metals
X19Contact with other heat and hot substances
X30Exposure to excessive natural heat
X31Exposure to excessive natural cold
X32Exposure to sunlight
X34Earthquake
X35Volcanic eruption
X36Avalanche, landslide and other earth movements
X37Cataclysmic storm
X38Flood
X39Exposure to other forces of nature
X50Overexertion and strenuous or repetitive movements
X52Prolonged stay in weightless environment
X58Exposure to other specified factors
X71Intentional self-harm by drowning and submersion
X72Intentional self-harm by handgun discharge
X73Intentional self-harm by rifle, shotgun and larger firearm discharge
X74Intentional self-harm by other and unspecified firearm and gun discharge
X75Intentional self-harm by explosive material
X76Intentional self-harm by smoke, fire and flames
X77Intentional self-harm by steam, hot vapors and hot objects
X78Intentional self-harm by sharp object
X79Intentional self-harm by blunt object
X80Intentional self-harm by jumping from a high place
X81Intentional self-harm by jumping or lying in front of moving object
X82Intentional self-harm by crashing of motor vehicle
X83Intentional self-harm by other specified means
X92Assault by drowning and submersion
X93Assault by handgun discharge
X94Assault by rifle, shotgun and larger firearm discharge
X95Assault by other and unspecified firearm and gun discharge
X96Assault by explosive material
X97Assault by smoke, fire and flames
X98Assault by steam, hot vapors and hot objects
X99Assault by sharp object
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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 X?
This index lists 51 top-level categories beginning with X from Vero’s FY 2027 U.S. ICD-10-CM reference dataset.
How do I find a more specific X 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 X 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 X 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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