X99 ICD-10-CM Code: Assault by sharp object
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
X99Assault by sharp object
ICD-10-CM diagnosis code · United States clinical modification
Where X99 sits
- 1
Chapter 20
External causes of morbidity (V00-Y99)
- 2
Section
Assault (X92-Y09)
- 3
Category X99
Assault by sharp object
- 4
Code X99
Assault by sharp object
Codes under X99
X99 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Notes for this code
Inclusion terms
No inclusion terms are listed for X99.
Code first
No “code first” instruction is listed for X99.
Use additional code
No “use additional code” instruction is listed for X99.
Excludes1
Conditions that should not be reported together with this code.
- assault by strike by sports equipment (Y08.0-)
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for X99.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code X99 mean?
X99 is the FY 2027 U.S. ICD-10-CM code for “Assault by sharp object.”
Is X99 a billable or specific ICD-10-CM code?
No. X99 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is X99 located in ICD-10-CM?
X99 is listed in Chapter 20, External causes of morbidity (V00-Y99), within Assault (X92-Y09) (X92–Y09), under category X99, Assault by sharp object.
What coding notes are listed for X99?
No inclusion terms are listed for X99 in this reference record. No code-first instruction is listed. Excludes1 notes: assault by strike by sports equipment (Y08.0-). No Excludes2 note is listed.