X99.9
⚠ Non-billable
Assault by unspecified sharp object
ICD-10-CM · FY2026 · External Causes of Morbidity
Code
X99.9
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
External Causes of Morbidity
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code X99.9?
ICD-10-CM code X99.9 represents Assault by unspecified sharp object. It is a non-billable header code requiring a more specific subcategory in the External Causes of Morbidity chapter, effective October 1, 2025 – September 30, 2026.
Is X99.9 billable?
No. X99.9 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is X99.9 in?
X99.9 belongs to the External Causes of Morbidity chapter (V00–Y99) of ICD-10-CM.
Related codes in the X99 category
X99
Assault by sharp object
Non-billable
X99.0
Assault by sharp glass
Non-billable
X99.1
Assault by knife
Non-billable
X99.2
Assault by sword or dagger
Non-billable
X99.8
Assault by other sharp object
Non-billable
X99.0XXA
Assault by sharp glass, initial encounter
Billable
X99.0XXD
Assault by sharp glass, subsequent encounter
Billable
X99.0XXS
Assault by sharp glass, sequela
Billable
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