X99.1 Assault by knife

Non-billable ICD-10-CM code.

Applies from X99 Assault by sharp object

Excludes1 (never code together)

• assault by strike by sports equipment (Y08.0-)

7th character note

• The appropriate 7th character is to be added to each code from category X99

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Code annotations containing back-references to X99.1

Back-references to X99

• Type 1 Excludes: Y04 Assault by bodily force ("use of weapon (X93-X95, X99, Y00)")

Diagnosis Index entries for X99.1

• Assault (homicidal) (by) (in) › cutting or piercing instrument › knife
• Assault (homicidal) (by) (in) › knife
• Assault (homicidal) (by) (in) › wound › knife
• Contact (accidental) › with › knife › assault

Nearby codes

• 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 (this code)
• 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