X99
ICD-10Non-billable categoryAssault by sharp object
Official ICD-10-CM descriptor (FY2026)
Assault by sharp object
X99 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- assault by strike by sports equipment (Y08.0-)
7th character
- The appropriate 7th character is to be added to each code from category X99
Permitted 7th characters
| A | initial encounter |
| D | subsequent encounter |
| S | sequela |
More specific codes under X99
Where this code sits
- Block
- Assault (X92-Y09)
Krasyn Codes for Chrome
Review coding suggestions beside a validated web workflow. Private pilot.
Request pilot accessSource
ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.