Y09Billable
Assault by unspecified means
- Chapter
- 20. External causes of morbidity
- Category
- Y09
- Effective date
- October 1, 2026
Frequently asked questions
What is ICD-10 code Y09?
Y09 is an ICD-10-CM diagnosis code for Assault by unspecified means.
Is Y09 a billable code?
Yes. Y09 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is Y09 in?
Y09 falls under Chapter 20: External causes of morbidity.
When did Y09 become effective?
Y09 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.