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 2027, 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
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the X99 range.
Assault By Sharp Object
A physical attack with a pointed object.
About the X99 Code Range
A physical attack with a pointed object falls under assault by sharp object.
The subdivisions identify the object: X99.0 for sharp glass, X99.1 for a knife, and X99.2 for a sword or dagger. X99.8 identifies another sharp object; X99.9 leaves the sharp object unspecified. Each subdivision has a seventh character for an initial encounter (A), subsequent encounter (D), or sequela (S).
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, 2026 through September 30, 2027. 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 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
