Assault by steam, hot vapors and hot objects (X98) ICD-10-CM
The X98 code range covers assault by steam, hot vapors and hot objects with 25 ICD-10-CM diagnosis codes. 18 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
7th Character Note
Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
- The appropriate 7th character is to be added to each code from category X98
7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
- A - initial encounter
- D - subsequent encounter
- S - sequela
Codes in the X98 Range 25 codes · 18 billable
- X98 Assault by steam, hot vapors and hot objectsNon-billable
- X98.0 Assault by steam or hot vaporsNon-billable
- X98.0XXA Assault by steam or hot vapors, initial encounter
- X98.0XXD Assault by steam or hot vapors, subsequent encounter
- X98.0XXS Assault by steam or hot vapors, sequela
- X98.1 Assault by hot tap waterNon-billable
- X98.1XXA Assault by hot tap water, initial encounter
- X98.1XXD Assault by hot tap water, subsequent encounter
- X98.1XXS Assault by hot tap water, sequela
- X98.2 Assault by hot fluidsNon-billable
- X98.2XXA Assault by hot fluids, initial encounter
- X98.2XXD Assault by hot fluids, subsequent encounter
- X98.2XXS Assault by hot fluids, sequela
- X98.3 Assault by hot household appliancesNon-billable
- X98.3XXA Assault by hot household appliances, initial encounter
- X98.3XXD Assault by hot household appliances, subsequent encounter
- X98.3XXS Assault by hot household appliances, sequela
- X98.8 Assault by other hot objectsNon-billable
- X98.8XXA Assault by other hot objects, initial encounter
- X98.8XXD Assault by other hot objects, subsequent encounter
- X98.8XXS Assault by other hot objects, sequela
- X98.9 Assault by unspecified hot objectsNon-billable
- X98.9XXA Assault by unspecified hot objects, initial encounter
- X98.9XXD Assault by unspecified hot objects, subsequent encounter
- X98.9XXS Assault by unspecified hot objects, sequela
About the X98 Code Range
The ICD-10 code X98 series is used to classify injuries resulting from assaults involving steam, hot vapors, hot liquids, and various hot objects. These codes distinguish between different types of hot agents causing harm, such as hot tap water, hot household appliances, and other hot objects, including unspecified sources.
Specifically, codes like X98.0 cover assault by steam or hot vapors, while X98.1 applies to hot tap water. The category X98.2, with synonyms including assault by fire and burning or assault by hot liquid, pertains to hot fluids. Assaults involving hot household appliances fall under X98.3, and assaults from other hot objects or branding are classified under X98.8. For cases where the hot object is unspecified, X98.9 is appropriate. Each of these codes includes sub-designations indicating the encounter type—initial (e.g., X98.0XXA), subsequent (e.g., X98.0XXD), or sequela (e.g., X98.0XXS)—which provide further detail on the treatment timeline.
These specific codes help healthcare professionals and medical coders accurately document and report injuries caused by assaults involving various hot sources, supporting precise communication and patient care tracking.
Questions About This Page
How many billable codes are in the X98 range?
Of the 25 codes in this range, 18 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the X98 range classify?
The range classifies assault by steam, hot vapors and hot objects. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
