Y00
⚠ Non-billable
Assault by blunt object
ICD-10-CM · FY2026 · External Causes of Morbidity
Code
Y00
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 Y00?
ICD-10-CM code Y00 represents Assault by blunt 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 Y00 billable?
No. Y00 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is Y00 in?
Y00 belongs to the External Causes of Morbidity chapter (V00–Y99) of ICD-10-CM.
Related codes in the Y00 category
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