Y00 — Assault by blunt object
Is Y00 billable?
No — Y00 is a non-billable header code. Y00 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 3 billable codes beneath Y00.
Y00 at a glance
| Code | Y00 |
|---|---|
| Description | Assault by blunt object |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is Y00 listed in the External Cause Index?
These are the routes through the External Cause of Injuries Index that lead to Y00 — how the injury happened, rather than what the injury was.
- Assault › weapon › blunt (homicidal) (by) (in)
- Struckby › object › blunt › assault (accidentally)
- Struckby › object › projected › assault (accidentally)
- Struckby › object › thrown › assault (accidentally)
- Struckby › other person › with › blunt object › intentional, homicide (accidentally)
Excludes1 — never code together
The conditions below can never be reported together with Y00 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- assault by strike by sports equipment (Y08.0-)
Excludes1 — never code together — inherited from X92-Y09
The conditions below can never be reported together with Y00 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
What codes fall under Y00? (3)
How long has Y00 existed?
Y00 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.