Assault by sharp object (X99)
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.
External causes of morbidity and mortality (V01–Y99)
Assault (X92-Y09)
X99 Assault by sharp object
X99.0 Assault by sharp glass
- 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 knife
- 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 dagger
- 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 object
- 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 object
- 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
Assault by sharp object (X99)
Instructional Notations
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
