Assault by sharp object (X99) ICD-10-CM
The X99 code range covers assault by sharp object with 21 ICD-10-CM diagnosis codes. 15 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- assault by strike by sports equipment Y08.0
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 X99
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 X99 Range 21 codes · 15 billable
- X99 Assault by sharp objectNon-billable
- X99.0 Assault by sharp glassNon-billable
- X99.0XXA Assault by sharp glass, initial encounter
- X99.0XXD Assault by sharp glass, subsequent encounter
- X99.0XXS Assault by sharp glass, sequela
- X99.1 Assault by knifeNon-billable
- X99.1XXA Assault by knife, initial encounter
- X99.1XXD Assault by knife, subsequent encounter
- X99.1XXS Assault by knife, sequela
- X99.2 Assault by sword or daggerNon-billable
- X99.2XXA Assault by sword or dagger, initial encounter
- X99.2XXD Assault by sword or dagger, subsequent encounter
- X99.2XXS Assault by sword or dagger, sequela
- X99.8 Assault by other sharp objectNon-billable
- X99.8XXA Assault by other sharp object, initial encounter
- X99.8XXD Assault by other sharp object, subsequent encounter
- X99.8XXS Assault by other sharp object, sequela
- X99.9 Assault by unspecified sharp objectNon-billable
- X99.9XXA Assault by unspecified sharp object, initial encounter
- X99.9XXD Assault by unspecified sharp object, subsequent encounter
- X99.9XXS Assault by unspecified sharp object, sequela
About the X99 Code Range
The ICD-10 code X99 series is used to classify injuries resulting from assault by sharp objects. These codes specify the type of sharp weapon involved, such as glass, knives, swords or daggers, and other sharp instruments, to provide precise documentation for medical and legal purposes.
Codes like X99.0 denote assault by sharp glass, commonly referred to as assault by cutting or assault with broken glass or bottle. Similarly, X99.1 covers assaults by knife, including stabbing with various types of knives, while X99.2 refers to assault by sword or dagger. The category X99.8 captures assaults by other sharp objects, which may include razor blades, axes, screws, or even injection needles. The X99.9 codes are used when the sharp object is unspecified but still involves cutting or stabbing actions commonly described as homicidal cuts, stabbings, or wounds from cutting instruments. Each code further distinguishes encounters by initial treatment, follow-ups, or sequelae to guide healthcare providers and coders in accurate reporting of injury circumstances.
Questions About This Page
How many billable codes are in the X99 range?
Of the 21 codes in this range, 15 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 X99 range classify?
The range classifies assault by sharp object. 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.
