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.

Categories beginning with X

Open a category to continue through its complete hierarchy of more specific codes.

X00Exposure to uncontrolled fire in building or structureX01Exposure to uncontrolled fire, not in building or structureX02Exposure to controlled fire in building or structureX03Exposure to controlled fire, not in building or structureX04Exposure to ignition of highly flammable materialX05Exposure to ignition or melting of nightwearX06Exposure to ignition or melting of other clothing and apparelX08Exposure to other specified smoke, fire and flamesX10Contact with hot drinks, food, fats and cooking oilsX11Contact with hot tap-waterX12Contact with other hot fluidsX13Contact with steam and other hot vaporsX14Contact with hot air and other hot gasesX15Contact with hot household appliancesX16Contact with hot heating appliances, radiators and pipesX17Contact with hot engines, machinery and toolsX18Contact with other hot metalsX19Contact with other heat and hot substancesX30Exposure to excessive natural heatX31Exposure to excessive natural coldX32Exposure to sunlightX34EarthquakeX35Volcanic eruptionX36Avalanche, landslide and other earth movementsX37Cataclysmic stormX38FloodX39Exposure to other forces of natureX50Overexertion and strenuous or repetitive movementsX52Prolonged stay in weightless environmentX58Exposure to other specified factorsX71Intentional self-harm by drowning and submersionX72Intentional self-harm by handgun dischargeX73Intentional self-harm by rifle, shotgun and larger firearm dischargeX74Intentional self-harm by other and unspecified firearm and gun dischargeX75Intentional self-harm by explosive materialX76Intentional self-harm by smoke, fire and flamesX77Intentional self-harm by steam, hot vapors and hot objectsX78Intentional self-harm by sharp objectX79Intentional self-harm by blunt objectX80Intentional self-harm by jumping from a high placeX81Intentional self-harm by jumping or lying in front of moving objectX82Intentional self-harm by crashing of motor vehicleX83Intentional self-harm by other specified meansX92Assault by drowning and submersionX93Assault by handgun dischargeX94Assault by rifle, shotgun and larger firearm dischargeX95Assault by other and unspecified firearm and gun dischargeX96Assault by explosive materialX97Assault by smoke, fire and flamesX98Assault by steam, hot vapors and hot objectsX99Assault by sharp object

Source and release

Data release
U.S. ICD-10-CM · FY 2027
Effective date
Oct 1, 2026

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 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.